Winner of the Nobel Prize in Physiology and Medicine, Dr. Alexis Carrel, one of the greatest scientists who ever lived, tells us what man is in terms of mental and physical composition and how he can become the true master of his universe if he learns to use his incredible God-given powers wisely."The wisest, deepest, and most valuable book I have come across in American literature of our century."- Will Durant, author of History of Philosophy"Meaningful, candid, courageous, and genuinely sincere."-New York Times"Provocative and thought-provoking."-Saturday Review"A work of genius...the breadth, the variety of perspectives, the courageous disregard for currently accepted beliefs that characterize great books."-New York Herald Tribune