永远不要停止学习，因为世界永远不会停止变化。

Your time is limited, so don’t waste it living someone else’s life.

The great philosophers are those who have made a difference in the way we think about the world and our place in it.

"I'm here to make history."

言论自由是自由的重要堡垒；它们共同繁荣和共同消亡。