In Darwin and Facial Expression, Paul Ekman and a cast of other notable scholars and scientists reconsider central concepts and key sources of information in Darwin's work on emotional expression. It was first published in 1972 to celebrate the centennial of the publication of Darwin's book The Expression of the Emotions in Man and Animals, and it is the first of three works edited by Dr. Ekman and others on the subject. This Malor edition has new and updated references. Darwin claimed that we cannot understand human emotional expression without understanding the emotional expressions of animals, for, he argued, our emotional expressions are in large part determined by our evolution. Not only are there similarities between man and certain other animals in the appearance of some emotional expressions, but the principles which explain why a particular emotional expression occurs with a particular emotion apply across species.'