July 8, 1893, is the birthdate of Fritz Perls, the German-born psychotherapist who co-founded Gestalt therapy. Over the course of his life, Perls experienced some of the most significant events and movements of the 20th century, and the psychological school of therapy he developed, whose heyday was in the 1970s and '80s, very much captured the zeitgeist. That being said, his method is still being taught and...