"We don't see things as they are, we see them as we are."

"Common sense is not so common."

"By three methods we may learn wisdom: first, by reflection, which is noblest; se..."

"The only thing I know is that I know nothing."

"In a gentle way, you can shake the world."

"It is not that I'm so smart. But I stay with the questions much longer."

"The only thing we have to fear is fear itself."

"The measure of intelligence is the ability to change."