we are most grateful to Shmuel Becher, Samantha Brennan, Miriam Gur- Arye, Hanoch Dagan, Meir Dan-Cohen, Guy Davidov, Ronit Donyets-Kedar, David Enoch, Ruth Gavison, Kent Greenawalt, Alon Harel, Roy Kreitner, Mordechai Kremnitzer, David Kretzmer, Itzhak Kugler, Daphna Lewinsohn- Zamir, Ariel Porat, Eric Posner, Yuval Procaccia, Ram Rivlin, Re’em Segev, Yuval Shany, Doron Teichman, David Weisburd, and Richard Zerbe for their invaluable suggestions and comments on earlier versions of parts of this book. We also wish to thank the participants in seminars and workshops held at the Georgetown University Law Center, Haifa University, the Hebrew University of Jerusalem, Tel Aviv University, and the 2007 Annual Conference of the European Association of Law and Economics for their helpful comments. Fruitful correspondence with Shelly Kagan and numerous enlightening discussions with David Enoch are particularly appreciated. We thank Yoel Ben-Or and Netta Corren for outstanding research assistance and Efrat Hakak for her excellent editing.