求知若飢，虚心若愚。

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.

Do every duty, and expect no reward for it.

居家时不是有才德的人，入朝做官也不是好官。小时候不是一个好的学生，将来不能够成为一个有才德的人。

最可持续的竞争优势是比竞争对手学得更快的能力。