This book was written primarily to stimulate the interest of scientists and other thoughtful persons towards striving for an improvement in human relationships. While it deals less exhaustively with this complex problem than several other works on the subject, it does strive to, and is successful in, clarifying a number of the most important issues that are under discussion throughout the world today. The different types and expressions of antisemitism are brought into the foreground, with mass psychology and special personality characteristics clearly presented. The comments on antisemitism in relation to Fascist propaganda are particularly informative.