"Finally, though I have had to speak at some length about sex, I want to make it as clear as I possibly can that the centre of Christian morality is not here. If anyone thinks that Christians regard unchastity as the supreme vice, [one] is quite wrong. The sins of the flesh are bad, but they are the least bad of all the sins. All the worst pleasures are purely spiritual: the pleasure of putting other people in the wrong, of bossing and patronizing and spoiling sport, and back-biting; the pleasures of power, of hatred. For there are two things inside me, competing with the human self which I must try to become. They are the Animal self and the Diabolical self. The Diabolical self is the worse of the two. That is why a cold, self-righteous prig who goes regularly to church may be far nearer to hell than a prostitute. But, of course, it is better to be neither."

-----C.S. Lewis, "Mere Christianity"