Always tell the truth. That way, you don't have to remember what you said.

The practice of patience guards against anger, and the practice of gratitude guards against greed and discontentment.

True originality consists not in a new manner but in a new vision.

No pessimist ever discovered the secrets of the stars or sailed to an uncharted land.

Success is not about seeking constant external approval; it's about staying focused on your own goals and values, regardless of others' opinions.

Peace cannot be kept by force; it can only be achieved by understanding.

Science can lift people out of poverty and cure disease. That, in turn, will reduce civil unrest.