With this provocative book the name of Fulton J. Sheen burst upon the literary world in 1925. It was a dramatic debut, for in this profound work he hurled the challenge at modern thinkers on the very ground they always assume is their own: the area of human reason. Bishop Sheen indicts modern philosophy for having lost faith in man's intellect, and therefore for having abandoned hope of attaining any knowledge of God by rational means. Because the book's emphasis is on reason rather than religious dogma, this brilliant analysis of the modern flight from reason and how it has affected man's ideas about God, like so many of Bishop Sheen's books, will appeal to non-Catholics as well as to Catholics.