This long-awaited reissue of the 1969 Cornell edition of Alfarabi"s Philosophy of Plato and Aristotle contains Muhsin Mahdi"s substantial original introduction and a new foreword by Charles E. Butterworth and Thomas L. Pangle. The three parts of the book, "Attainment of Happiness," "Philosophy of Plato," and "Philosophy of Aristotle," provide a philosophical foundation for Alfarabi"s political works.