But hatred is best combined with Fear. Cowardice, alone of all the vices, is purely painful - horrible to anticipate, horrible to feel, horrible to remember; Hatred has its pleasures. It is therefore often the compensation by which a frightened man reimburses himself for the miseries of fear. The more he fears, the more he will hate. And Hatred is also a great anodyne for shame. To make a deep wound in his charity, you should therefore first defeat his courage.
C.S. Lewis, The Screwtape Letters (136)