The Exorcist

— I'm Damien Karras.
— And I am the devil. Now kindly undo these straps.
— If you're the devil, why not make the straps disappear?

— Would you like some brandy in that, Father?
— The doctors say I shouldn't. But thank God... my will is weak.

Look, your daughter doesn't say she's a demon. She says shes the devil himself. If you've seen as many psychotics as I have, you'd realize... that's the same as saying you're Napoleon Bonaparte.

If certain British doctors had never asked, "What is this fungus?" we wouldn't today have penicillin.