"It is the mark of an educated mind to be able to entertain a thought without acc..."

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

"Silence is a source of great strength."

"The fool doth think he is wise, but the wise man knows himself to be a fool."

"Common sense is not so common."

"Knowing yourself is the beginning of all wisdom."

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

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