I know that pain is the most important thing in the universes. Greater than survival, greater than love, greater even than the beauty it brings about. For without pain, there can be no pleasure. Without sadness, there can be no happiness. Without misery there can be no beauty. And without these, life is endless, hopeless, doomed and damned. Adult. You have become adult.

The fantasies of Harlan Ellison (ed. Macmillan Reference USA, 1979)