Paul Ricoeur is one of the most important twentieth century French philosophers, who taught both in France and in the United States. He was the author of many books, including The Voluntary and the Involuntary, Fallible Man, and The Symbolism of Evil, Freud and Philosophy, The Rule of Metaphor, Time and Narrative, Oneself as Another, Memory History, Forgetting, and The Course of Recognition, as well as many essays, including ones on the philosophy of religion.