Ravelstein by Saul Bellow

Abe Ravelstein is a brilliant professor who glories in training the movers and shakers of the political world. He has lived grandly and ferociously — and much beyond his means. His close friend Chick has suggested that he put forth a book of his convictions about the ideas which sustain humankind, or kill it. Much to Ravelstein's own surprise, the book makes him a millionaire. Ravelstein suggests in turn that Chick write a memoir or a life of him, and during the course of a celebratory trip to Paris the two share thoughts on mortality, philosophy and history, loves and friends, old and new