Aesthetics

"Aesthetic" redirects here. For the 19th century art movement, see Aestheticism. For the EP by From First to Last, see Aesthetic (EP).

Aesthetics (/ɛsˈθɛtɪks/; also spelled æsthetics and esthetics also known in Greek as Αισθητική, or "Aisthētiké") is a branch of philosophy dealing with the nature of art, beauty, and taste, with the creation and appreciation of beauty. It is more scientifically defined as the study of sensory or sensori-emotional values, sometimes called judgments of sentiment and taste. More broadly, scholars in the field define aesthetics as "critical reflection on art, culture and nature." In modern English, the term aesthetic can also refer to a set of principles underlying the works of a particular art movement or theory: One speaks for example of the Cubist aesthetic.

Etymology

The word aesthetic is derived from the Greek αἰσθητικός (aisthetikos, meaning "esthetic, sensitive, sentient, pertaining to sense perception"), which in turn was derived from αἰσθάνομαι (aisthanomai, meaning "I perceive, feel, sense"). The term "aesthetics" was appropriated and coined with new meaning by the German philosopher Alexander Baumgarten in his dissertation Mediationes philosophicae de nonnullis ad poema pertinentibus ("Philosophical considerations of some matters pertaining the poem") in 1735, even though his later definition in the fragment Aesthetica (1750) is more often referred to as the first definition of modern aesthetics.

Aesthetics and the philosophy of art

Aesthetics is for the artist as Ornithology is for the birds.

— Barnett Newman

For some, aesthetics is considered a synonym for the philosophy of art since Hegel, while others insist that there is a significant distinction between these closely related fields. In practice, aesthetic judgement refers to the sensory contemplation or appreciation of an object (not necessarily an art object), while artistic judgement refers to the recognition, appreciation or criticism of art or an art work.

Philosophical aesthetics has not only to speak about art and to produce judgments about art works, but has also to give a definition of what art is. Art is an autonomous entity for philosophy, because art deals with the senses (i. e. the etymology of aesthetics) and art is as such free of any moral or political purpose. Hence, there are two different conceptions of art in aesthetics: art as knowledge or art as action, but aesthetics is neither epistemology nor ethics.

History before the 20th century

Main article: History of aesthetics before the 20th century

See also : Beauty (ancient thought)

Bronze sculpture, thought to be either Poseidon or Zeus, National Archaeological Museum of Athens

Any aesthetic doctrines that guided the production and interpretation of prehistoric art are mostly unknown. An indirect concern with aesthetics can be inferred from ancient art in many early civilizations, including Egypt, Mesopotamia, Persia, Greece, China, the Etruscans, Rome, India, the Celtic peoples, and the Maya, as each of them developed a unique and characteristic style in its art.

Western aesthetics usually refers to Greek philosophers as the earliest source of formal aesthetic considerations. Plato believed in beauty as a form in which beautiful objects partake and which causes them to be beautiful. He felt that beautiful objects incorporated proportion, harmony, and unity among their parts. Similarly, in the Metaphysics, Aristotle found that the universal elements of beauty were order, symmetry, and definiteness.

Cubist painting by Georges Braque, Violin and Candlestick (1910)

From the late 17th to the early 20th century Western aesthetics underwent a slow revolution into what is often called modernism. German and British thinkers emphasised beauty as the key component of art and of the aesthetic experience, and saw art as necessarily aiming at absolute beauty.

For Alexander Gottlieb Baumgarten aesthetics is the science of the sense experiences, a younger sister of logic, and beauty is thus the most perfect kind of knowledge that sense experience can have. For Immanuel Kant the aesthetic experience of beauty is a judgment of a subjective but similar human truth, since all people should agree that "this rose is beautiful" if it in fact is. However, beauty cannot be reduced to any more basic set of features. For Friedrich Schiller aesthetic appreciation of beauty is the most perfect reconciliation of the sensual and rational parts of human nature.

For Friedrich Wilhelm Joseph Schelling, the philosophy of art is the "organon" of philosophy concerning the relation between man and nature. So aesthetics began now to be the name for the philosophy of art. Friedrich von Schlegel, August Wilhelm Schlegel, Friedrich Schleiermacher and Georg Wilhelm Friedrich Hegel also gave lectures on aesthetics as philosophy of art after 1800.

For Hegel, all culture is a matter of "absolute spirit" coming to be manifest to itself, stage by stage, changing to a perfection that only philosophy can approach. Art is the first stage in which the absolute spirit is manifest immediately to sense-perception, and is thus an objective rather than subjective revelation of beauty.

For Arthur Schopenhauer aesthetic contemplation of beauty is the most free that the pure intellect can be from the dictates of will; here we contemplate perfection of form without any kind of worldly agenda, and thus any intrusion of utility or politics would ruin the point of the beauty. It is thus for Schopenhauer one way to fight the suffering.

The British were largely divided into intuitionist and analytic camps. The intuitionists believed that aesthetic experience was disclosed by a single mental faculty of some kind. For Anthony Ashley-Cooper, 3rd Earl of Shaftesbury this was identical to the moral sense, beauty just is the sensory version of moral goodness. For Ludwig Wittgenstein aesthetics consisted in the description of a whole culture which is a linguistic impossibility. Hence his viewpoint can be paraphrased as "That which constitutes aesthetics lies outside the realm of the language game".

William Hogarth, self-portrait, 1745

For Oscar Wilde, the contemplation of beauty for beauty's sake (augmented by John Ruskin's search for moral grounding) was more than the foundation for much of his literary career; he once stated, "Aestheticism is a search after the signs of the beautiful. It is the science of the beautiful through which men seek the correlation of the arts. It is, to speak more exactly, the search after the secret of life.".

Wilde famously toured the United States in 1882. He travelled across the United States spreading the idea of Aesthetics in a speech called "The English Renaissance." In his speech he proposed that Beauty and Aesthetics was "not languid but energetic. By beautifying the outward aspects of life, one would beautify the inner ones." The English Renaissance was, he said, "like the Italian Renaissance before it, a sort of rebirth of the spirit of man".

For Francis Hutcheson beauty is disclosed by an inner mental sense, but is a subjective fact rather than an objective one. Analytic theorists like Henry Home, Lord Kames, William Hogarth, and Edmund Burke hoped to reduce beauty to some list of attributes. Hogarth, for example, thinks that beauty consists of (1) fitness of the parts to some design; (2) variety in as many ways as possible; (3) uniformity, regularity or symmetry, which is only beautiful when it helps to preserve the character of fitness; (4) simplicity or distinctness, which gives pleasure not in itself, but through its enabling the eye to enjoy variety with ease; (5) intricacy, which provides employment for our active energies, leading the eye on "a wanton kind of chase"; and (6) quantity or magnitude, which draws our attention and produces admiration and awe. Later analytic aestheticians strove to link beauty to some scientific theory of psychology (such as James Mill) or biology (such as Herbert Spencer).

New Criticism and The Intentional Fallacy

During the first half of the twentieth century, a significant shift to general aesthetic theory took place which attempted to apply aesthetic theory between various forms of art, including the literary arts and the visual arts, to each other. This resulted in the rise of the New Criticism school and debate concerning the intentional fallacy. At issue was the question of whether the aesthetic intentions of the artist in creating the work of art, whatever its specific form, should be associated with the criticism and evaluation of the final product of the work of art, or, if the work of art should be evaluated on its own merits independent of the intentions of the artist.

In 1946, William K. Wimsatt and Monroe Beardsley published a classic and controversial New Critical essay entitled "The Intentional Fallacy", in which they argued strongly against the relevance of an author's intention, or "intended meaning" in the analysis of a literary work. For Wimsatt and Beardsley, the words on the page were all that mattered; importation of meanings from outside the text was considered irrelevant, and potentially distracting.

In another essay, "The Affective Fallacy," which served as a kind of sister essay to "The Intentional Fallacy" Wimsatt and Beardsley also discounted the reader's personal/emotional reaction to a literary work as a valid means of analyzing a text. This fallacy would later be repudiated by theorists from the reader-response school of literary theory. Ironically, one of the leading theorists from this school, Stanley Fish, was himself trained by New Critics. Fish criticizes Wimsatt and Beardsley in his essay "Literature in the Reader" (1970).

As summarized by Gaut and Livingston in their essay "The Creation of Art": "Structuralist and post-structuralists theorists and critics were sharply critical of many aspects of New Criticism, beginning with the emphasis on aesthetic appreciation and the so-called autonomy of art, but they reiterated the attack on biographical criticisms' assumption that the artist's activities and experience were a privileged critical topic." These authors contend that: "Anti-intentionalists, such as formalists, hold that the intentions involved in the making of art are irrelevant or peripheral to correctly interpreting art. So details of the act of creating a work, though possibly of interest in themselves, have no bearing on the correct interpretation of the work."

Gaut and Livingston define the intentionalists as distinct from formalists stating that: "Intentionalists, unlike formalists, hold that reference to intentions is essential in fixing the correct interpretation of works." They quote Richard Wollheim as stating that, "The task of criticism is the reconstruction of the creative process, where the creative process must in turn be thought of as something not stopping short of, but terminating on, the work of art itself."

Post-modern aesthetics and psychoanalysis

Example of the Dada aesthetic, Marcel Duchamp's Fountain 1917

Early-twentieth-century artists, poets and composers challenged existing notions of beauty, broadening the scope of art and aesthetics. In 1941, Eli Siegel, American philosopher and poet, founded Aesthetic Realism, the philosophy that reality itself is aesthetic, and that "The world, art, and self explain each other: each is the aesthetic oneness of opposites."

Various attempts have been made to define Post-Modern Aesthetics. The challenge to the assumption that beauty was central to art and aesthetics, thought to be original, is actually continuous with older aesthetic theory; Aristotle was the first in the Western tradition to classify "beauty" into types as in his theory of drama, and Kant made a distinction between beauty and the sublime. What was new was a refusal to credit the higher status of certain types, where the taxonomy implied a preference for tragedy and the sublime to comedy and the Rococo.

Croce suggested that "expression" is central in the way that beauty was once thought to be central. George Dickie suggested that the sociological institutions of the art world were the glue binding art and sensibility into unities. Marshall McLuhan suggested that art always functions as a "counter-environment" designed to make visible what is usually invisible about a society. Theodor Adorno felt that aesthetics could not proceed without confronting the role of the culture industry in the commodification of art and aesthetic experience. Hal Foster attempted to portray the reaction against beauty and Modernist art in The Anti-Aesthetic: Essays on Postmodern Culture. Arthur Danto has described this reaction as "kalliphobia" (after the Greek word for beauty, κάλλος kallos). André Malraux explains that the notion of beauty was connected to a particular conception of art that arose with the Renaissance and was still dominant in the eighteenth century (but was supplanted later). The discipline of aesthetics, which originated in the eighteenth century, mistook this transient state of affairs for a revelation of the permanent nature of art. Brian Massumi suggests to reconsider beauty following the aesthetical thought in the philosophy of Deleuze and Guattari.

Jean-François Lyotard re-invokes the Kantian distinction between taste and the sublime. Sublime painting, unlike kitsch realism, "... will enable us to see only by making it impossible to see; it will please only by causing pain."

Sigmund Freud inaugurated aesthetical thinking in Psychoanalysis mainly via the "Uncanny" as aesthetical affect. Following Freud and Merleau-Ponty, Jacques Lacan theorized aesthetics in terms of sublimation and the Thing.

The relation of Marxist aesthetics to post-modern aesthetics is still a contentious area of debate.

Recent aesthetics

Guy Sircello has pioneered efforts in analytic philosophy to develop a rigorous theory of aesthetics, focusing on the concepts of beauty, love and sublimity. In contrast to romantic theorists Sircello argued for the objectivity of beauty and formulated a theory of love on that basis.

British philosopher and theorist of conceptual art aesthetics, Peter Osborne, makes the point that "'post-conceptual art' aesthetic does not concern a particular type of contemporary art so much as the historical-ontological condition for the production of contemporary art in general ...". Osborne noted that contemporary art is 'post-conceptual in a public lecture delivered in 2010.

Gary Tedman has put forward a theory of a subjectless aesthetics derived from Karl Marx's concept of alienation, and Louis Althusser's antihumanism, using elements of Freud's group psychology, defining a concept of the 'aesthetic level of practice'.

Gregory Loewen has suggested that the subject is key in the interaction with the aesthetic object. The work of art serves as a vehicle for the projection of the individual's identity into the world of objects, as well as being the irruptive source of much of what is uncanny in modern life. As well, art is used to memorialize individuated biographies in a manner that allows persons to imagine that they are part of something greater than themselves.

Aesthetics and science

Initial image of a Mandelbrot set zoom sequence with continuously colored environment

The field of experimental aesthetics was founded by Gustav Theodor Fechner in the 19th century. Experimental aesthetics in these times had been characterized by a subject-based, inductive approach. The analysis of individual experience and behavior based on experimental methods is a central part of experimental aesthetics. In particular, the perception of works of art, music, or modern items such as websites or other IT products is studied. Experimental aesthetics is strongly oriented towards the natural sciences. Modern approaches mostly come from the fields of cognitive psychology or neuroscience (neuroaesthetics).

In the 1970s, Abraham Moles and Frieder Nake were among the first to analyze links between aesthetics, information processing, and information theory.

In the 1990s, Jürgen Schmidhuber described an algorithmic theory of beauty which takes the subjectivity of the observer into account and postulates: among several observations classified as comparable by a given subjective observer, the aesthetically most pleasing one is the one with the shortest description, given the observer's previous knowledge and his particular method for encoding the data. This is closely related to the principles of algorithmic information theory and minimum description length. One of his examples: mathematicians enjoy simple proofs with a short description in their formal language. Another very concrete example describes an aesthetically pleasing human face whose proportions can be described by very few bits of information, drawing inspiration from less detailed 15th century proportion studies by Leonardo da Vinci and Albrecht Dürer. Schmidhuber's theory explicitly distinguishes between what's beautiful and what's interesting, stating that interestingness corresponds to the first derivative of subjectively perceived beauty. Here the premise is that any observer continually tries to improve the predictability and compressibility of the observations by discovering regularities such as repetitions and symmetries and fractal self-similarity. Whenever the observer's learning process (which may be a predictive neural network; see also Neuroesthetics) leads to improved data compression such that the observation sequence can be described by fewer bits than before, the temporary interestingness of the data corresponds to the number of saved bits. This compression progress is proportional to the observer's internal reward, also called curiosity reward. A reinforcement learning algorithm is used to maximize future expected reward by learning to execute action sequences that cause additional interesting input data with yet unknown but learnable predictability or regularity. The principles can be implemented on artificial agents which then exhibit a form of artificial curiosity.

Truth as beauty, mathematics

Mathematical considerations, such as symmetry and complexity, are used for analysis in theoretical aesthetics. This is different from the aesthetic considerations of applied aesthetics used in the study of mathematical beauty. Aesthetic considerations such as symmetry and simplicity are used in areas of philosophy, such as ethics and theoretical physics and cosmology to define truth, outside of empirical considerations. Beauty and Truth have been argued to be nearly synonymous, as reflected in the statement "Beauty is truth, truth beauty" in the poem Ode on a Grecian Urn by John Keats, or by the Hindu motto "Satyam Shivam Sundaram" (Satya (Truth) is Shiva (God), and Shiva is Sundaram (Beautiful)). The fact that judgments of beauty and judgments of truth both are influenced by processing fluency, which is the ease with which information can be processed, has been presented as an explanation for why beauty is sometimes equated with truth. Indeed, recent research found that people use beauty as an indication for truth in mathematical pattern tasks. However, scientists including the mathematician David Orrell and physicist Marcelo Gleiser have argued that the emphasis on aesthetic criteria such as symmetry is equally capable of leading scientists astray.

Computational inference of aesthetics

Since about 2005, computer scientists have attempted to develop automated methods to infer aesthetic quality of images. Typically, these approaches follow a machine learning approach, where large numbers of manually rated photographs are used to "teach" a computer about what visual properties are of relevance to aesthetic quality. The Acquine engine, developed at Penn State University, rates natural photographs uploaded by users.

Notable in this area is Michael Leyton, professor of psychology at Rutgers University. Leyton is the president of the International Society for Mathematical and Computational Aesthetics and the International Society for Group Theory in Cognitive Science and has developed a generative theory of shape.

There have also been relatively successful attempts with regard to chess and music. A relation between Max Bense's mathematical formulation of aesthetics in terms of "redundancy" and "complexity" and theories of musical anticipation was offered using the notion of Information Rate.

Evolutionary aesthetics

Main article: Evolutionary aesthetics

Evolutionary aesthetics refers to evolutionary psychology theories in which the basic aesthetic preferences of Homo sapiens are argued to have evolved in order to enhance survival and reproductive success. One example being that humans are argued to find beautiful and prefer landscapes which were good habitats in the ancestral environment. Another example is that body symmetry is an important aspect of physical attractiveness which may be due to this indicating good health during body growth. Evolutionary explanations for aesthetical preferences are important parts of evolutionary musicology, Darwinian literary studies, and the study of the evolution of emotion.

Applied aesthetics

Main article: Applied aesthetics

As well as being applied to art, aesthetics can also be applied to cultural objects such as crucifix or tools. Aesthetic coupling between art-objects and medical topics was made by speakers working for the US Information Agency This coupling was made to reinforce the learning paradigm when English-language speakers used translators to address audiences in their own country. These audiences were generally not fluent in the English language. It can also be used in topics as diverse as mathematics, gastronomy, fashion and website design.

Aesthetic ethics

Aesthetic ethics refers to the idea that human conduct and behaviour ought to be governed by that which is beautiful and attractive. John Dewey has pointed out that the unity of aesthetics and ethics is in fact reflected in our understanding of behaviour being "fair" — the word having a double meaning of attractive and morally acceptable. More recently, James Page has suggested that aesthetic ethics might be taken to form a philosophical rationale for peace education.

Aesthetic judgment

Judgments of aesthetic value rely on our ability to discriminate at a sensory level. Aesthetics examines our affective domain response to an object or phenomenon. Immanuel Kant, writing in 1790, observes of a man "If he says that canary wine is agreeable he is quite content if someone else corrects his terms and reminds him to say instead: It is agreeable to me," because "Everyone has his own (sense of) taste". The case of "beauty" is different from mere "agreeableness" because, "If he proclaims something to be beautiful, then he requires the same liking from others; he then judges not just for himself but for everyone, and speaks of beauty as if it were a property of things."

Aesthetic judgments usually go beyond sensory discrimination. For David Hume, delicacy of taste is not merely "the ability to detect all the ingredients in a composition", but also our sensitivity "to pains as well as pleasures, which escape the rest of mankind." (Essays Moral Political and Literary. Indianapolis, Literary Classics 5, 1987.) Thus, the sensory discrimination is linked to capacity for pleasure. For Kant "enjoyment" is the result when pleasure arises from sensation, but judging something to be "beautiful" has a third requirement: sensation must give rise to pleasure by engaging our capacities of reflective contemplation. Judgments of beauty are sensory, emotional and intellectual all at once.

Viewer interpretations of beauty possess two concepts of value: aesthetics and taste. Aesthetics is the philosophical notion of beauty. Taste is a result of an education process and awareness of elite cultural values learned through exposure to mass culture. Bourdieu examined how the elite in society define the aesthetic values like taste and how varying levels of exposure to these values can result in variations by class, cultural background, and education. According to Kant, beauty is subjective and universal; thus certain things are beautiful to everyone. The contemporary view of beauty is not based on innate qualities, but rather on cultural specifics and individual interpretations.

Factors involved in aesthetic judgment

Rainbows often have aesthetic appeal.

Judgments of aesthetical values seem often to involve many other kinds of issues as well. Responses such as disgust show that sensory detection is linked in instinctual ways to facial expressions, and even behaviors like the gag reflex. Yet disgust can often be a learned or cultural issue too; as Darwin pointed out, seeing a stripe of soup in a man's beard is disgusting even though neither soup nor beards are themselves disgusting. Aesthetic judgments may be linked to emotions or, like emotions, partially embodied in our physical reactions. Seeing a sublime view of a landscape may give us a reaction of awe, which might manifest physically as an increased heart rate or widened eyes. These unconscious reactions may even be partly constitutive of what makes our judgment a judgment that the landscape is sublime.

Likewise, aesthetic judgments may be culturally conditioned to some extent. Victorians in Britain often saw African sculpture as ugly, but just a few decades later, Edwardian audiences saw the same sculptures as being beautiful. Evaluations of beauty may well be linked to desirability, perhaps even to sexual desirability. Thus, judgments of aesthetic value can become linked to judgments of economic, political, or moral value. In a current context, one might judge a Lamborghini to be beautiful partly because it is desirable as a status symbol, or we might judge it to be repulsive partly because it signifies for us over-consumption and offends our political or moral values.

Aesthetic judgments can often be very fine-grained and internally contradictory. Likewise aesthetic judgments seem often to be at least partly intellectual and interpretative. It is what a thing means or symbolizes for us that is often what we are judging. Modern aestheticians have asserted that will and desire were almost dormant in aesthetic experience, yet preference and choice have seemed important aesthetics to some 20th-century thinkers. The point is already made by Hume, but see Mary Mothersill, "Beauty and the Critic's Judgment", in The Blackwell Guide to Aesthetics, 2004. Thus aesthetic judgments might be seen to be based on the senses, emotions, intellectual opinions, will, desires, culture, preferences, values, subconscious behavior, conscious decision, training, instinct, sociological institutions, or some complex combination of these, depending on exactly which theory one employs.

Are different art forms beautiful, disgusting, or boring in the same way?

A third major topic in the study of aesthetic judgments is how they are unified across art forms. We can call a person, a house, a symphony, a fragrance, and a mathematical proof beautiful. What characteristics do they share which give them that status? What possible feature could a proof and a fragrance both share in virtue of which they both count as beautiful? What makes a painting beautiful is quite different from what makes music beautiful, which suggests that each art form has its own language for the judgement of aesthetics.

At the same time, there is seemingly quite a lack of words to express oneself accurately when making an aesthetic judgment. An aesthetic judgment cannot be an empirical judgement. Therefore, due to impossibility for precision, there is confusion about what interpretations can be culturally negotiated. Due to imprecision in the standard English language, two completely different feelings experienced by two different people can be represented by an identical verbal expression. Wittgenstein stated this in his lectures on aesthetics and language games.

A collective identification of beauty, with willing participants in a given social spectrum, may be a socially negotiated phenomenon, discussed in a culture or context. Is there some underlying unity to aesthetic judgment and is there some way to articulate the similarities of a beautiful house, beautiful proof, and beautiful sunset? Defining it requires a description of the entire phenomenon, as Wittgenstein argued in his lectures on aesthetics. Likewise there has been long debate on how perception of beauty in the natural world, especially perception of the human form as beautiful, is supposed to relate to perceiving beauty in art or artefacts. This goes back at least to Kant, with some echoes even in St. Bonaventure.

What is "art"?

Main article: Theory of art

Harmony of colours

How best to define the term "art" is a subject of constant contention; many books and journal articles have been published arguing over even the basics of what we mean by the term "art". Theodor Adorno claimed in 1969 "It is self-evident that nothing concerning art is self-evident." Artists, philosophers, anthropologists, psychologists and programmers all use the notion of art in their respective fields, and give it operational definitions that vary considerably. Furthermore, it is clear that even the basic meaning of the term "art" has changed several times over the centuries, and has continued to evolve during the 20th century as well.

The main recent sense of the word "art" is roughly as an abbreviation for creative art or "fine art." Here we mean that skill is being used to express the artist's creativity, or to engage the audience's aesthetic sensibilities, or to draw the audience towards consideration of the "finer" things. Often, if the skill is being used in a functional object, people will consider it a craft instead of art, a suggestion which is highly disputed by many Contemporary Craft thinkers. Likewise, if the skill is being used in a commercial or industrial way it may be considered design instead of art, or contrariwise these may be defended as art forms, perhaps called applied art. Some thinkers, for instance, have argued that the difference between fine art and applied art has more to do with the actual function of the object than any clear definitional difference. Art usually implies no function other than to convey or communicate an idea.

Even as late as 1912 it was normal in the West to assume that all art aims at beauty, and thus that anything that wasn't trying to be beautiful couldn't count as art. The cubists, dadaists, Stravinsky, and many later art movements struggled against this conception that beauty was central to the definition of art, with such success that, according to Danto, "Beauty had disappeared not only from the advanced art of the 1960's but from the advanced philosophy of art of that decade as well." Perhaps some notion like "expression" (in Croce's theories) or "counter-environment" (in McLuhan's theory) can replace the previous role of beauty. Brian Massumi brought back "beauty" into consideration together with "expression". Another view, as important to the philosophy of art as "beauty," is that of the "sublime," elaborated upon in the twentieth century by the postmodern philosopher Jean-François Lyotard. A further approach, elaborated by André Malraux in works such as The Voices of Silence, is that art is fundamentally a response to a metaphysical question ('Art', he writes, 'is an 'anti-destiny'). Malraux argues that, while art has sometimes been oriented towards beauty and the sublime (principally in post-Renaissance European art) these qualities, as the wider history of art demonstrates, are by no means essential to it.

Perhaps (as in Kennick's theory) no definition of art is possible anymore. Perhaps art should be thought of as a cluster of related concepts in a Wittgensteinian fashion (as in Weitz or Beuys). Another approach is to say that "art" is basically a sociological category, that whatever art schools and museums and artists define as art is considered art regardless of formal definitions. This "institutional definition of art" (see also Institutional Critique) has been championed by George Dickie. Most people did not consider the depiction of a store-bought urinal or Brillo Box to be art until Marcel Duchamp and Andy Warhol (respectively) placed them in the context of art (i.e., the art gallery), which then provided the association of these objects with the associations that define art.

Proceduralists often suggest that it is the process by which a work of art is created or viewed that makes it art, not any inherent feature of an object, or how well received it is by the institutions of the art world after its introduction to society at large. If a poet writes down several lines, intending them as a poem, the very procedure by which it is written makes it a poem. Whereas if a journalist writes exactly the same set of words, intending them as shorthand notes to help him write a longer article later, these would not be a poem. Leo Tolstoy, on the other hand, claims in his What is art? (1897) that what decides whether or not something is art is how it is experienced by its audience, not by the intention of its creator. Functionalists like Monroe Beardsley argue that whether or not a piece counts as art depends on what function it plays in a particular context; the same Greek vase may play a non-artistic function in one context (carrying wine), and an artistic function in another context (helping us to appreciate the beauty of the human figure). '

Marxist attempts to define art focus on its place in the mode of production, such as in Walter Benjamin's essay The Author as Producer, and/or its political role in class struggle. Revising some concepts of the Marxist philosopher Louis Althusser, Gary Tedman defines art in terms of social reproduction of the relations of production on the aesthetic level.

See also: Classificatory disputes about art

What should art be like?

Many goals have been argued for art, and aestheticians often argue that some goal or another is superior in some way. Clement Greenberg, for instance, argued in 1960 that each artistic medium should seek that which makes it unique among the possible mediums and then purify itself of anything other than expression of its own uniqueness as a form. The Dadaist Tristan Tzara on the other hand saw the function of art in 1918 as the destruction of a mad social order. "We must sweep and clean. Affirm the cleanliness of the individual after the state of madness, aggressive complete madness of a world abandoned to the hands of bandits." Formal goals, creative goals, self-expression, political goals, spiritual goals, philosophical goals, and even more perceptual or aesthetic goals have all been popular pictures of what art should be like.

The value of art

Tolstoy defined art as the following: "Art is a human activity consisting in this, that one man consciously, by means of certain external signs, hands on to others feelings he has lived through, and that other people are infected by these feelings and also experience them." However, this definition is merely a starting point for his theory of art's value. To some extent, the value of art, for Tolstoy, is one with the value of empathy. However, sometimes empathy is not of value. In chapter fifteen of What Is Art?, Tolstoy says that some feelings are good, but others are bad, and so art is only valuable when it generates empathy or shared feeling for good feelings. For example, Tolstoy asserts that empathy for decadent members of the ruling class makes society worse, rather than better. In chapter sixteen, he asserts that the best art is "universal art" that expresses simple and accessible positive feeling. Other possible views are these: Art can act as a means to some special kind of knowledge. Art may give insight into the human condition. Art relates to science and religion. Art serves as a tool of education, or indoctrination, or enculturation. Art makes us more moral. It uplifts us spiritually. Art is politics by other means. Art has the value of allowing catharsis. In any case, the value of art may determine the suitability of an art form. Do they differ significantly in their values, or (if not) in their ability to achieve the unitary value of art?

But to approach the question of the value of art systematically, one ought to ask: for whom? For the artist? For the audience? For society at large, and/or for individuals beyond the audience? Is the "value" of art different in each of these different contexts?

Working on the intended value of art tends to help define the relations between art and other acts. Art clearly does have spiritual goals in many contexts, but what exactly is the difference between religious art and religion per se? The truth is complex; art is both useless in a functional sense, and also the most important human activity.

An argument for the value of art, used in the fictional work The Hitchhikers Guide to the Galaxy, proceeds that, if some external force presenting imminent destruction of Earth asked humanity what its value was—what should humanity's response be? The argument continues that the only justification humanity could give for its continued existence would be the past creation and continued creation of things like a Shakespeare play, a Rembrandt painting or a Bach concerto. The suggestion is that these are the things of value which define humanity. Whatever one might think of this claim — and it does seem to undervalue the many other achievements of which human beings have shown themselves capable, both individually and collectively — it is true that art appears to possess a special capacity to endure ("live on") beyond the moment of its birth, in many cases for centuries or millennia. This capacity of art to endure over time — what precisely it is and how it operates — has been widely neglected in modern aesthetics.

Aesthetic universals

The philosopher Denis Dutton identified six universal signatures in human aesthetics:

1. Expertise or virtuosity. Humans cultivate, recognize, and admire technical artistic skills.
2. Nonutilitarian pleasure. People enjoy art for art's sake, and don't demand that it keep them warm or put food on the table.
3. Style. Artistic objects and performances satisfy rules of composition that place them in a recognizable style.
4. Criticism. People make a point of judging, appreciating, and interpreting works of art.
5. Imitation. With a few important exceptions like abstract painting, works of art simulate experiences of the world.
6. Special focus. Art is set aside from ordinary life and made a dramatic focus of experience.

It might be objected, however, that there are too many exceptions to Dutton's categories. For example, the installations of the contemporary artist Thomas Hirschhorn deliberately eschew technical virtuosity. People can appreciate a Renaissance Madonna for aesthetic reasons, but such objects often had (and sometimes still have) specific devotional functions. "Rules of composition" that might be read into Duchamp's Fountain or John Cage's 4′33″ do not locate the works in a recognizable style (or certainly not a style recognizable at the time of the works' realisation). Moreover, some of Dutton's categories seem too broad: a physicist might entertain hypothetical worlds in his/her imagination in the course of formulating a theory. Another problem is that Dutton's categories seek to universalise traditional European notions of aesthetics and art forgetting that, as André Malraux and others have pointed out, there have been large numbers of cultures in which such ideas (including the idea "art" itself) were non-existent.

Criticism

The philosophy of aesthetics as a practice has been criticized by some sociologists and writers of art and society. Raymond Williams argues that there is no unique and or individual aesthetic object which can be extrapolated from the art world, but that there is a continuum of cultural forms and experience of which ordinary speech and experiences may signal as art. By "art" we may frame several artistic "works" or "creations" as so though this reference remains within the institution or special event which creates it and this leaves some works or other possible "art" outside of the frame work, or other interpretations such as other phenomenon which may not be considered as "art".

Pierre Bourdieu disagrees with Kant's idea of the "aesthetic". He argues that Kant's "aesthetic" merely represents an experience that is the product of an elevated class habitus and scholarly leisure as opposed to other possible and equally valid "aesthetic" experiences which lay outside Kant's narrow definition.

Timothy Laurie argues that theories of musical aesthetics "framed entirely in terms of appreciation, contemplation or reflection risk idealising an implausibly unmotivated listener defined solely through musical objects, rather than seeing them as a person for whom complex intentions and motivations produce variable attractions to cultural objects and practices".

Aesthetics in Non-Western cultures

Indian aesthetics

Indian art evolved with an emphasis on inducing special spiritual or philosophical states in the audience, or with representing them symbolically. According to Kapila Vatsyayan, "Classical Indian architecture, sculpture, painting, literature (kāvya), music, and dancing evolved their own rules conditioned by their respective media, but they shared with one another not only the underlying spiritual beliefs of the Indian religio-philosophic mind, but also the procedures by which the relationships of the symbol and the spiritual states were worked out in detail."

In the Pan Indian philosophic thought the term 'Satyam Shivam Sundaram' is another name for the concept of the Supreme. 'Sat' is the truth value, 'Shiv' is the good value & 'Sundaram' is the beauty value. Man through his 'Sravana' or education, 'Manana' or experience and conceptualization and 'Sadhana' or practice, through different stages of life (Ashramas) comes to form and realize the idea of these three values to develop a value system. This Value-system helps develop two basic ideas 1) that of 'Daksha' or the adept/expert and 2) of Mahana/Parama or the Absolute and thus to judge anything in this universe in the light of these two measures, known as 'Adarsha'. A person who has mastered great amounts of knowledge of the grammars, rules, & language of an art-form are adepts (Daksha), whereas those who have worked through the whole system and journeyed ahead of these to become a law unto themselves is called a Mahana. Individuals idea of 'Daksha' and 'Mahana' is relative to the development of the concept of 'Satyam-Shivam-Sundaram.' For example, Tagore's idea of these two concepts should be above any common man's and many perceive Tagore as a 'Mahana' Artist in the realm of literature. This concept of Satyam-Shivam-Sundaram, a kind of Value Theory is the cornerstone of Indian Aesthetics.

Of particular concern to Indian drama and literature are the term 'Bhava' or the state of mind and rasa referring generally to the emotional flavors/essence crafted into the work by the writer and relished by a 'sensitive spectator' or sahṛdaya. Poets like Kālidāsa were attentive to rasa, which blossomed into a fully developed aesthetic system. Even in contemporary India the term rasa denoting "flavor" or "essence" is used colloquially to describe the aesthetic experiences in films; "māsala mix" describes popular Hindi cinema films which serve a so-called balanced emotional meal for the masses, savored as rasa by these spectators.

Rasa theory blossoms beginning with the Sanskrit text Nātyashāstra (nātya meaning "drama" and shāstra meaning "science of"), a work attributed to Bharata Muni where the Gods declare that drama is the 'Fifth Veda' because it is suitable for the degenerate age as the best form of religious instruction. While the date of composition varies widely among scholars, ranging from the era of Plato and Aristotle to the seventh century CE. The Nātyashāstra presents the aesthetic concepts of rasas and their associated bhāvas in Chapters Six and Seven respectively, which appear to be independent of the work as a whole. Eight rasas and associated bhāvas are named and their enjoyment is likened to savoring a meal: rasa is the enjoyment of flavors that arise from the proper preparation of ingredients and the quality of ingredients. What rasa actually is, in a theoretical sense, is not discussed and given the Nātyashāstra's pithy wording it is unlikely the exact understanding of the original author(s) will be known.

The theory of the rasas develops significantly with the Kashmiri aesthetician Ãndandavardhana's classic on poetics, the Dhvanyāloka which introduces the ninth rasa, shānta-rasa as a specifically religious feeling of peace (śānta) which arises from its bhāva, weariness of the pleasures of the world. The primary purpose of this text is to refine the literary concept dhvani or poetic suggestion, by arguing for the existence of the rasa-dhvani, primarily in forms of Sanskrit including a word, sentence or whole work "suggests" a real-world emotional state or bhāva, but thanks to aesthetic distance, the sensitive spectator relishes the rasa, the aesthetic flavor of tragedy, heroism or romance.

The 9th–10th century master of the religious system known as "the nondual Shaivism of Kashmir" (or "Kashmir Shaivism") and aesthetician, Abhinavagupta brought rasa theory to its pinnacle in his separate commentaries on the Dhvanyāloka, the Dhvanyāloka-locana (translated by Ingalls, Masson and Patwardhan, 1992) and the Abhinavabharati, his commentary on the Nātyashāstra, portions of which are translated by Gnoli and Masson and Patwardhan. Abhinavagupta offers for the first time a technical definition of rasa which is the universal bliss of the Self or Atman colored by the emotional tone of a drama. Shānta-rasa functions as an equal member of the set of rasas but is simultaneously distinct being the most clear form of aesthetic bliss. Abhinavagupta likens it to the string of a jeweled necklace; while it may not be the most appealing for most people, it is the string that gives form to the necklace, allowing the jewels of the other eight rasas to be relished. Relishing the rasas and particularly shānta-rasa is hinted as being as-good-as but never-equal-to the bliss of Self-realization experienced by yogis.

Chinese aesthetics

Chinese art has a long history of varied styles and emphases. Confucius emphasized the role of the arts and humanities (especially music and poetry) in broadening human nature and aiding li (etiquette, the rites) in bringing us back to what is essential about humanity. His opponent Mozi, however, argued that music and fine arts were classist and wasteful, benefiting the rich over the poor.

By the 4th century AD artists had started debating in writing over the proper goals of art as well. Gu Kaizhi has left three surviving books on the theory of painting. Several later artists or scholars both created art and wrote about the creation of it. Religious and philosophical influences on art were common (and diverse) but never universal.

Modern Chinese aesthetic theory took shape during the modernisation of China from Empire to republic in early 20th century. Thus thinkers like Kant, Hegel, Marx and Heidegger have all been incorporated into contemporary Chinese aesthetic theory, through philosophers like Li Zehou.

African aesthetics

The Great Mosque's signature trio of minarets overlooks the central market of Djenné. Unique Malian aesthetic

African art has existed in many forms and styles, with relatively little influence from outside Africa. Most of it followed traditional forms; the aesthetic norms were handed down orally as well as textually. Sculpture and performance art are prominent, and abstract and partially abstracted forms are valued, and were valued long before influence from the Western tradition began in earnest. The Nok culture is testimony to this. The mosque of Timbuktu shows that specific areas of Africa developed unique aesthetics.

Arab aesthetics

Arab art for the last 1400 years has taken place under the context of Islam and is sometimes referred to as Islamic art, although many Arab artists throughout time have not been Muslim. The term "Islamic" refers not only to the religion, but to any form of art created by people in an Islamic culture or in an Islamic context, whether the artist is Islamic or not. Not all Muslims are in agreement on the use of art in religious observance, the proper place of art in society, or the relation between secular art and the demands placed on the secular world to conform to religious precepts. Islamic art frequently adopts secular elements and elements that are frowned upon, if not forbidden, by some Islamic theologians. Although the often cited opposition in Islam to the depiction of human and animal forms holds true for religious art and architecture, in the secular sphere, such representations have flourished in nearly all Islamic cultures.

The Islamic resistance to the representation of living beings ultimately stems from the belief that the creation of living forms is unique to God, and it is for this reason that the role of images and image makers has been controversial. The strongest statements on the subject of figural depiction are made in the Hadith (Traditions of the Prophet), where painters are challenged to "breathe life" into their creations and threatened with punishment on the Day of Judgment. The Qur'an is less specific but condemns idolatry and uses the Arabic term musawwir ("maker of forms," or artist) as an epithet for God. Partially as a result of this religious sentiment, figures in painting were often stylized and, in some cases, the destruction of figurative artworks occurred. Iconoclasm was previously known in the Byzantine period and aniconicism was a feature of the Judaic world, thus placing the Islamic objection to figurative representations within a larger context. As ornament, however, figures were largely devoid of any larger significance and perhaps therefore posed less challenge.

This tendency affected the narrowing field of artistic possibility to such forms of art as Arabesque, mosaic, Islamic calligraphy, and Islamic architecture, as well as any form of abstraction that can claim the status of non-representational art.

Limited possibilities have been explored by artists as an outlet to artistic expression, and has been cultivated to become a positive style and tradition, emphasizing the decorative function of art, or its religious functions via non-representational forms such as Geometric patterns, floral patterns, and arabesques.

Human portrayals can be found in early Islamic cultures with varying degrees of acceptance by religious authorities. Human representation for the purpose of worship is uniformly considered idolatry as forbidden in Sharia law.

The calligraphic arts grew out of an effort to devote oneself to the study of the Quran. By patiently transcribing each word of the text, the writer was made to contemplate the meaning of it. As time passed, these calligraphic works began to be prized as works of art, growing increasingly elaborate in the illumination and stylizing of the text. These illuminations were applied to other works besides the Quran, and it became a respected art form in and of itself.

Arabic is written from right to left, like other Semitic scripts, and consists of 17 characters, which, with the addition of dots placed above or below certain of them, provide the 28 letters of the Arabic alphabet. Short vowels are not included in the alphabet, being indicated by signs placed above or below the consonant or long vowel that they follow. Certain characters may be joined to their neighbors, others to the preceding one only, and others to the succeeding one only. The written letters undergo a slight external change according to their position within a word. When they stand alone or occur at the end of a word, they ordinarily terminate in a bold stroke; when they appear in the middle of a word, they are ordinarily joined to the letter following by a small, upward curved stroke. With the exception of six letters, which can be joined only to the preceding ones, the initial and medial letters are much abbreviated, while the final form consists of the initial form with a triumphant flourish. The essential part of the characters, however, remains unchanged.

See also

• Art periods
• Mise en scène

Further reading

• Mario Perniola, 20th Century Aesthetics. Towards A Theory of Feeling, translated by Massimo Verdicchio, London-New Delhi-New York-Sydney, Bloomsbury, 2013, ISBN 978-1-4411-1850-9.
• Handbook of Phenomenological Aesthetics. Edited by Hans Rainer Sepp and Lester Embree. (Series: Contributions To Phenomenology, Vol. 59) Springer, Dordrecht / Heidelberg / London / New York 2010. ISBN 978-90-481-2470-1
• Theodor W. Adorno, Aesthetic Theory, Minneapolis, University of Minnesota Press, 1997.
• Ayn Rand, The Romantic Manifesto: A Philosophy of Literature, New York, NY, New American Library, 1971
• Derek Allan, Art and the Human Adventure, Andre Malraux's Theory of Art, Rodopi, 2009
• Derek Allan. Art and Time, Cambridge Scholars, 2013.
• Augros, Robert M., Stanciu, George N., The New Story of Science: mind and the universe, Lake Bluff, Ill.: Regnery Gateway, c1984. ISBN 0-89526-833-7 (has significant material on Art, Science and their philosophies)
• John Bender and Gene Blocker Contemporary Philosophy of Art: Readings in Analytic Aesthetics 1993.
• René Bergeron. L'Art et sa spiritualité. Québec, QC.: Éditions du Pelican, 1961.
• Christine Buci-Glucksmann (2003), Esthétique de l'éphémère, Galilée. (French)
• Noël Carroll (2000), Theories of Art Today, University of Wisconsin Press.
• Mario Costa (1999) (in Italian), L'estetica dei media. Avanguardie e tecnologia, Milan: Castelvecchi, ISBN 88-8210-165-7.
• Benedetto Croce (1922), Aesthetic as Science of Expression and General Linguistic.
• E. S. Dallas (1866), The Gay Science, 2 volumes, on the aesthetics of poetry.
• Danto, Arthur (2003), The Abuse of Beauty: Aesthetics and the Concept of Art, Open Court.
• Stephen Davies (1991), Definitions of Art.
• Terry Eagleton (1990), The Ideology of the Aesthetic. Blackwell. ISBN 0-631-16302-6
• Susan Feagin and Patrick Maynard (1997), Aesthetics. Oxford Readers.
• Penny Florence and Nicola Foster (eds.) (2000), Differential Aesthetics. London: Ashgate. ISBN 0-7546-1493-X
• Berys Gaut and Dominic McIver Lopes (eds.), Routledge Companion to Aesthetics. 3rd edition. London and New York: Routledge, 2013.
• Annemarie Gethmann-Siefert (1995), Einführung in die Ästhetik, Munich, W. Fink.
• David Goldblatt and Lee B. Brown, ed. (2010), Aesthetics: A Reader in the Philosophy of the Arts. 3rd edition. Pearson Publishing.
• Theodore Gracyk (2011), The Philosophy of Art: An Introduction. Polity Press.
• Greenberg, Clement (1960), "Modernist Painting", The Collected Essays and Criticism 1957–1969, The University of Chicago Press, 1993, 85-92.
• Evelyn Hatcher (ed.), Art as Culture: An Introduction to the Anthropology of Art. 1999
• Georg Wilhelm Friedrich Hegel (1975), Aesthetics. Lectures on Fine Art, trans. T.M. Knox, 2 vols. Oxford: Clarendon Press.
• Hans Hofmann and Sara T Weeks; Bartlett H Hayes; Addison Gallery of American Art; Search for the real, and other essays (Cambridge, Mass., M.I.T. Press, 1967) OCLC 1125858
• Michael Ann Holly and Keith Moxey (eds.), Art History and Visual Studies. Yale University Press, 2002. ISBN 0-300-09789-1
• Carol Armstrong and Catherine de Zegher (eds.), Women Artists at the Millennium. Massachusetts: October Books/MIT Press, 2006. ISBN 0-262-01226-X
• Kant, Immanuel (1790), Critique of Judgement, Translated by Werner S. Pluhar, Hackett Publishing Co., 1987.
• Kelly, Michael (Editor in Chief) (1998) Encyclopedia of Aesthetics. New York, Oxford, Oxford University Press. 4 voll., pp. XVII-521, pp. 555, pp. 536, pp. 572; 2224 total pages; 100 b/w photos; ISBN 978-0-19-511307-5. Covers philosophical, historical, sociological, and biographical aspects of Art and Aesthetics worldwide.
• Alexander J. Kent, "Aesthetics: A Lost Cause in Cartographic Theory?" The Cartographic Journal, 42(2) 182-8, 2005.
• Søren Kierkegaard (1843), Either/Or, translated by Alastair Hannay, London, Penguin, 1992
• Peter Kivy (ed.), The Blackwell Guide to Aesthetics. 2004
• Carolyn Korsmeyer (ed.), Aesthetics: The Big Questions. 1998
• Lyotard, Jean-François (1979), The Postmodern Condition, Manchester University Press, 1984.
• Merleau-Ponty, Maurice (1969), The Visible and the Invisible, Northwestern University Press.
• David Novitz (1992), The Boundaries of Art.
• Mario Perniola, The Art and Its Shadow, foreword by Hugh J. Silverman, translated by Massimo Verdicchio, London-NewYork, Continuum, 2004.
• Robert Pirsig, Zen and the Art of Motorcycle Maintenance: An Inquiry into Values, 1974, paperpack, or hardback first edition ISBN 0-688-00230-7
• Griselda Pollock, "Does Art Think?" In: Dana Arnold and Margaret Iverson (eds.) Art and Thought. Oxford: Basil Blackwell, 2003. 129-174. ISBN 0-631-22715-6.
• Griselda Pollock, Encounters in the Virtual Feminist Museum: Time, Space and the Archive. Routledge, 2007. ISBN 0-415-41374-5.
• Griselda Pollock, Generations and Geographies in the Visual Arts. Routledge, 1996. ISBN 0-415-14128-1.
• George Santayana (1896), The Sense of Beauty. Being the Outlines of Aesthetic Theory. New York, Modern Library, 1955.
• Elaine Scarry, On Beauty and Being Just. Princeton, 2001. ISBN 978-0-691-08959-1
• Friedrich Schiller, (1795), On the Aesthetic Education of Man. Dover Publications, 2004.
• Alan Singer and Allen Dunn (eds.), Literary Aesthetics: A Reader. Blackwell Publishing Limited, 2000. ISBN 978-0-631-20869-3
• Władysław Tatarkiewicz, A History of Six Ideas: an Essay in Aesthetics, The Hague, 1980. ISBN 978-90-247-2233-4
• Władysław Tatarkiewicz, History of Aesthetics, 3 vols. (1–2, 1970; 3, 1974), The Hague, Mouton.
• Markand Thakar Looking for the 'Harp' Quartet: An Investigation into Musical Beauty. University of Rochester Press, 2011.
• Leo Tolstoy, What Is Art?, Penguin Classics, 1995.
• The London Philosophy Study Guide offers many suggestions on what to read, depending on the student's familiarity with the subject: Aesthetics
• John M. Valentine, Beginning Aesthetics: An Introduction To The Philosophy of Art. McGraw-Hill, 2006. ISBN 978-0-07-353754-2
• von Vacano, Diego, "The Art of Power: Machiavelli, Nietzsche and the Making of Aesthetic Political Theory," Lanham MD: Lexington: 2007.
• Thomas Wartenberg, The Nature of Art. 2006.
• John Whitehead, Grasping for the Wind. 2001.
• Ludwig Wittgenstein, Lectures on aesthetics, psychology and religious belief, Oxford, Blackwell, 1966.
• Richard Wollheim, Art and its objects, 2nd edn, 1980, Cambridge University Press, ISBN 0-521-29706-0
• Sen, R. K., Aesthetic Enjoyment: Its Background in Philosophy and Medicine, Calcutta: University of Calcutta, 1966

External links

• Aesthetics at the Indiana Philosophy Ontology Project
• Aesthetics at PhilPapers
• Aesthetics entry in the Internet Encyclopedia of Philosophy
• Medieval Theories of Aesthetics article in the Internet Encyclopedia of Philosophy
• Revue online Appareil
• Postscript 1980– Some Old Problems in New Perspectives
• Aesthetics in Art Education: A Look Toward Implementation
• More about Art, culture and Education
• An history of aesthetics
• The Concept of the Aesthetic
• Aesthetics entry in the Routledge Encyclopedia of Philosophy
• Philosophy of Aesthetics entry in the Philosophy Archive
• Washington State Board for Community & Technical Colleges: Introduction to Aesthetics
• Art Perception Complete pdf version of art historian David Cycleback's book.