"You see things and say 'Why?'; but I dream things that never were and I say 'Why not?'"

"It is dangerous to be sincere unless you are also stupid."

The worst sin towards our fellow creatures is not to hate them, but to be indifferent to them. That's the essence of inhumanity."

"When a thing is funny, search it carefully for a hidden truth."

"The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man."