"Introverts keep their best stuff inside—that is, until it is ready. And this drives extroverts crazy! The explanation for the introvert’s behavior—and there must be an explanation for this behavior, say the extroverts—is that he or she is antisocial, out of touch, or simply a snob."

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I wouldn't want to manufacture cigarettes. But if I owned - we do own Costco. Do they sell them? Yes. So I don't have a problem owning stock in that. But I just wouldn't want to - I wouldn't want to do it myself. I basically think, if anything is sufficiently antisocial, society should do something about it. But that's a separate question. But - and I don't think there's any company that I have seen that's 100 percent pure.

— Warren Buffett