"Common sense is not so common."

"Knowing yourself is the beginning of all wisdom."

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

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

"The mind is everything. What you think you become."

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

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

"Patience is the companion of wisdom."