Are you interested in the contributions of psychology to the analysis of economic behavior ? I am. Therefore I was delighted today when I found the excellent web site of the course in Economic and Psychology of David Laibson & Andrei Shleifer at Harvard University. I would like to thank both Laibson and Schleifer and Harvard University for encouraging the circulation of knowledge by giving access to the course materials also to non-harvardians. THANK YOU.