"I don’t think necessity is the mother of invention. Invention, in my opinion, arises directly from idleness, possibly also from laziness—to save oneself trouble."

"I usually get my best ideas when I'm eating an apple."

"As life goes on it becomes tiring to keep up the character you invented for yourself, and so you relapse into individuality and become more like yourself every day."

"Everyone is a potential murderer-in everyone there arises from time to time the wish to kill-though not the will to kill."

"The human face is, after all, nothing more nor less than a mask."