Wittgenstein’s Folly: Philosophy, Psychoanalysis and Language Games presents a dialogue between the philosopher Ludwig Wittgenstein, the author Françoise Davoine and Davoine’s patients with extreme lived experience. This book begins with Davoine’s seminar at the École des Hautes Études en Sciences Sociales in Paris, which is attended by Wittgenstein. He then accompanies Davoine on visits to colleagues at the Austen Riggs Center in Massachusetts, in California, on a Sioux reservation in South Dakota and at Freud’s house in Vienna. The dialogic form of the book allows a performance centered on the psychotherapy of madness and trauma, in which Wittgenstein takes the floor. Davoine introduces us to a contemporary Feast of Fools and creates new language games with madness, enlarging the scope of psychoanalytic approaches to authors like Wittgenstein. The chapters of this book closely resemble short plays in which a conversation with living human beings or with characters from philosophy, literature, science and the arts encounter one another and begin to open new ways of speaking that can render the "mad" more familiar and more manageable. Wittgenstein’s Folly: Philosophy, Psychoanalysis and Language Games will be of great interest to psychoanalysts and to academics and students engaged in psychoanalytic studies, philosophy and trauma-related studies.