Henri F. Ellenberger, the Swiss medical historian, is best remembered today as the author of The Discovery of the Unconscious (1970), a brilliant, encyclopedic study of psychiatric theory and therapy from primitive times to the mid-twentieth century. However, in addition to this well-known work, Ellenberger has written over thirty essays in the history of the mental sciences. This collection unites fourteen of Ellenberger's most interesting and methodologically innovative historical essays, many of which draw on new and rich bodies of primary materials. Several of the articles appear here in English translation for the first time. The essays deal with subjects such as the intellectual origins of psycho-analysis, the work of the French psychological school of Jean-Martin Charcot and Pierre Janet, the role of the "great patients" in the history of psychiatry, and the cultural history of psychiatry. The publication of these writings, which corresponds with the opening in Paris of the Institut Henri Ellenberger, truly establishes Ellenberger as the founding figure of the historiography of psychiatry. Accompanying the essays are an extensive interpretive introduction and a detailed bibliographical essay by the editor. Originally published in 1993. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.