The successive volumes in the series known as ""Religious Perspectives"" have each made their solid contribution in directing ""mankind toward a reality that is eternal"", and Martin D'Arcy's present work adds luster to the whole effort. Orginally given as the Danforth Lectures at Cornell University in 1959, these chapters are a solid analysis of the interrelation between God and the Self. In ancient times when thought was concentrated on God, there was little vocabulary or interest in the Self. With such developments as rationalism and existentialism, we became so concerned with the , and with man's problems and activities, that it was God who was neglected or even denied. The result, however, was not the disappearance of God, but the annihilation of Self. This is the philosophical problem to which this book is addressed. If for nothing else, the book's reconsideration of the onological argument is worth the reader's attention. Some background in philosophy is needed for reading this book, and even then it is not easy. This is no reflection on its closely-knit thought or its interesting style. Rather, D'Arcy is handling big ideas, and, while much of his material is freely ascribed to men who have previously worked on phases of his problem, the author is combining this material in new ways that have to be thought about. No one in the field of philosophy, whether clergyman, college professor or advanced student can ignore the approach that D'Arcy has made.