Thoughts are dangerous, he told himself, and thoughts against all science, all sanity, all civilized intelligence, are the most dangerous of all. Conjure Wife (1953)
You know, all insanity is a form of artistic expression, I often think. Only the person has nothing but himself to work with—he can’t get at outside materials to manipulate them—so he puts all his art into his behavior. Our Lady of Darkness (1977)