At eighty-five, Jacques Maritain, the most distinguished Catholic philosopher of the twentieth century, has written what he offers as his last book, and it turns out to be a shocker. The peasant, as Maritain calls himself in the title, is a man who calls a spade a spade; and a storm of controversy descended immediately on the book's publication in France, as both Right and Left reeled from the force of Maritain's criticism.