Unfortunately, things are not always that simple. First, there is the daunt¬ing gap between ethical judgment and ethical behavior. From at least the time of Plato and Aristotle, Western philosophy has acknowledged a real disconti¬nuity between judging some act as right and following through and doing it. It is difficult enough knowing the difference between good and bad, right and wrong. But knowing is different from doing, and not everyone has the forti¬tude, strength of character, or motivation to act in ways that we know are best. While many observers expect an ethics class to teach ethical behavior, most ethicists have the more modest goal for their courses. It is not at all clear, for example, that an ethics course would have made any difference to the execu¬tives at Enron and Arthur Andersen.