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

"Common sense is not so common."

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

"The only true wisdom is in knowing you know nothing."

"He who has a why to live can bear almost any how."

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

"A wise man can learn more from a foolish question than a fool can learn from a w..."

"Knowing yourself is the beginning of all wisdom."