For many years a minister in influential Presbyterian churches and more recently President of the Presbyterian Theological Seminary in Chicago, Dr. Cotton is concerned to outline how one may attain to a knowledge of God. He is acutely aware of the trends in secular philosophy and psychology which make religious faith difficult for the modern man. At the same time he is worried by the confusion of thought within the Protestant Church. So he endeavors to outline a basis for a Christian apologetic which will be understandable by the modern man and yet in line with the essentials of the Christian tradition. This is confessedly no easy reading. It is rather a book for theologians and philosophers and for such of the clergy as have deep theological interests.