NO longer believe in an afterlife, at least not one as expressed by the usual images of Heaven and Hell, and most thinking people probably don’t either. However, I do believe that I will live forever as part of the vast molecular system of which I am composed. My ‘soul’, or whatever lives on, will not be preoccupied with the petty issues of politics and family, but with eternity. I find our increasing awareness of the complexity of life on earth and our gradual recognition that understanding everything is still far beyond the capacity of our human brains—which are often described as the most sophisticated organisms ever produced—rather comforting, as it explains for me why