"Drugs age you after mental excitement. Lethargy then. Why? Reaction. A lifetime in a night. Gradually changes your character."

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The characters within a book were, from a certain point of view, identical on some fundamental level ‒ there weren't any images of them, no physical tangibility whatsoever. They were pictures in the reader's head, constructs of imagination and ideas, given shape by the writer's work and skill and the reader's imagination. Parents, of a sort.

— Jim Butcher