"Leisure is the mother of Philosophy."

"For the Passions that most of all disturb the mind of man, are such as depend on the expectation of the future."

"The light of human minds is perspicuous words, but by exact definitions first snuffed, and purged from ambiguity."

"For there is no such thing as perpetual tranquility of mind, while we live here; because life itself is but motion, and can never be without desire, nor without fear, no more than without sense."

"For what is there in the world that is not subject to change?"