All perfect republics are a perfect nonsense.The craving to risk death is our last great perversion.We come from night, we go into night.Why live in night?

-Fowles,John Robert
  The Magus, ch.19.

Mr Mercaptan went on to preach a brilliant sermon on that melancholy sexual perversion known as continence.

-Huxley, Aldous Leonard
  Antic Hay, ch.18.

War is, after all, the universal perversion.

-Rae,John
  The Custard Boys, ch.13.