Winner of the Nobel Prize for physiology and medicine, Dr. Alexis Carrel, one of the truly great scientists who ever lived, tells us what man is in terms of his mental and physical make-up—and how he can become the actual rule of his universe if he learns to use wisely his amazing, God-given powers.

“The wisest, profoundest, most valuable book that I have come upon in the American literature of our century”—Will Durant, Author of Story of Philosophy

“Significant, candid, courageous and genuinely sincere”—New York Times

“Provocative and stimulating”—Saturday Review

“A work of genius…the spaciousness, the variety of outlook, the brave disregard for currently accepted beliefs that characterize great books”—New York Herald Tribune