“True knowledge exists in knowing that you know nothing.”

“It is the unknown that excites the ardor of scholars, who, in the known alone, would wither.”

“The life that is not examined is not worth living.”

“To move the world, we must first move ourselves.”

“He who asks a question is a fool for five minutes. He who does not ask a question is a fool forever. O-# It is the constant and determined effort that breaks down resistance and sweeps away all obstacles.”