St. Francis de Sales is widely known for his writings on spiritual direction and spiritual formation, particularly the Introduction to the Devout Life and the Treatise on the Love ...view moreSt. Francis de Sales is widely known for his writings on spiritual direction and spiritual formation, particularly the Introduction to the Devout Life and the Treatise on the Love of God. Though admired for his intellect and theological wisdom, he spoke with simplicity and earnestness, so that all could understand; and he stressed that sanctity is possible in everyday life. Francis died in 1622 and was canonized in 1665. His feast is celebrated on January 24.view less