I have friends in overalls whose friendship I would not swap for the favor of the kings of the world.
The value of an idea lies in the using of it.
Show me a thoroughly satisfied man and I will show you a failure.
The best thinking has been done in solitude. The worst has been done in turmoil.
We don't know a millionth of one percent about anything.
To my mind the old masters are not art; their value is in their scarcity.