This world of ours seems to be divided into two types of people: not "male" and "female," but "nice" and "not nice." As we go through life, we all too often seem to evaluate everyone we meet according to this standard. In the hilarious Mel Brooks Western satire Blazing Saddles, after only one long night of romancing, Lili Von Shtupp falls head over heels for Sheriff Bart. Later, she refers to him by saying, "What a nice guy." In Man of La Mancha, Sancho Panza follows Don Quixote from one misfortune to another. Why would he do such a thing?...