“[Y]ou poisoned me with a book once. I should not forgive that. Harry, promise me that you will never lend that book to anyone. It does harm.”
“My dear boy, you are really beginning to moralize. You will soon be going about like the converted, and the revivalist, warning people against all the sins of which you have grown tired. You are much too delightful to do that.... As for being poisoned by a book, there is no such thing as that. Art has no influence upon action. It annihilates the desire to act. It is superbly sterile. The books that the world calls immoral are books that show the world its own shame.”

-- The Picture of Dorian Gray, Oscar Wilde