"Someone who does not know the difference between good and evil is worth nothing." -- Miecyslaw Kasprzyk, Polish rescuer of Jews during the Holocaust, New York Times, Jan. 30, 2005 It took a Polish rescuer of Jews in the Holocaust, cited this week 60 years after the liberation of the Auschwitz concentration and death camp, to best describe those people who cannot or refuse to know the difference between good and evil. They are "worth nothing." Since I was an adolescent, I have been preoccupied with evil: specifically, why people engage in it and why other people refuse to acknowledge...