First published in 1922, this book represents an attempt to outline the biological approach to the questions of religious thought. The author posits the book as a contribution to religious thought in relation to the purpose of God in Nature, providing readers with an overview of the advances and changes in thought that had occurred in the years before the book was written. The examinations of the nature of man and of evolution in relation to religion make up the bulk of the book along with a look at the argument from beauty. The book will be of interest to students of religion, biology and philosophy.