The word “morality” generally refers to conceptions of right and wrong, good and bad, and the principles that define propriety and vice. Moral behavior is therefore motivated by conceptions of right and wrong, and seems to be tied to promoting one's conception of the good, and preventing or punishing perceived moral transgressions. Nevertheless, behavior and actions that some perceive as the height of moral virtue or sacrifice, others might see as an apex of depravity and evil. For example, most Americans were horrified by the September 11, 2001, terrorist attacks on the World Trade Center and the Pentagon. More than 78% of Americans surveyed shortly after the attacks believed the attackers were “evil to the core” (Skitka, Bauman, & Mullen, 2004). In contrast, a Gallup poll of nine Muslim countries (December 2001–January 2002) found that 67% percent of the respondents felt that the 9/11 attacks were morally justified (George, 2002). In short, morality can sometimes be a double-edged sword: depending on one's point of view, morally motivated behavior can be seen as the epitome of virtue or of evil.