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

"Common sense is not so common."

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

"To know what you know and what you do not know, that is true knowledge."

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

"Patience is the companion of wisdom."

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

"Science is organized knowledge. Wisdom is organized life."