The playful title of this paper has a serious purpose. We cannot understand Ludwig Wittgenstein, the philosopher, without understanding Ludwig Wittgenstein, the moral agent (and the moral patient). Wittgenstein himself would have agreed. He frequently couched his discussion of philosophical problems in moral or quasi-moral terms. He called Frank Ramsey a bourgeois thinker. He compared mathematicians' presumed reaction to his criticisms to a patient's resentful response to Freudian psychoanalysis. He expressed his disapproval of the intellectual level of philosophical journals by comparing them unfavorably with American pulp detective magazines. When Russell praised Norbert Wiener as a mathematician, Wittgenstein's reply was curt: "If Wiener is good at mathematics, mathematics is no good". It is amply clear that set theory was a more serious sin for Wittgenstein than sodomy.