"It is impossible to say how first the idea entered my brain; but once conceived, it haunted me day and night."

"The ‛Imp of the Perverse’ is a radical, a primitive impulse—elementary, and altogether indissoluble."

"Science has not yet taught us if madness is or is not the sublimity of the intelligence."

"A lie travels round the world while truth is putting her boots on."

"The highest intellect is but a shadow of the lowest intuition."