I don't care what others say, only what I do.
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.
痛苦可以摧毁一个人，也可以塑造一个人。
你无法改变自己是谁，只能改变自己做什么。
Efficiency is doing things right; effectiveness is doing the right things.