The greatest tragedy of modern life is that we have everything we want, but nothing we need.
(道德高尚的人)明察安危,安于祸福,谨慎地对待去留,就没有什么能够伤害他们。
Your time is limited, so don't waste it living someone else's life.
君子做学问,是为了完善自己;小人做学问,是为了哗众取宠。