Sigmund Freud's 150 Birthday Anniversary was celebrated on May 2006. The event was commemorated through hundreds of Scientific and Cultural event around the world. The Sigmund Freud Center for Study and Research in Psychoanalysis, of the Hebrew University, held a multi-disciplinary convention in Jerusalem in which was discussed Freud's important mass Civilization and Its Discontents. Due to the success of the convention, it was thought that it would be appropriate to process the lectures into articles and put them together in this book.