A proof is a way to convince yourself and others that something is true.

On morals: "The one thing that offends me the most is when I walk by a bank and see ads trying to convince people to take out second mortgages on their home so they can go on vacation. That's approaching evil."

"The world is a text, and we are all its readers and writers."

Truth, like gold, is to be obtained not by its growth, but by washing away from it all that is not gold.

博物馆是艺术的墓地。