国家一定要有直言进谏的臣子，上级必须有敢于提出反对意见的下级，议论国政的人不停止，各种不同政见的人相互辩论，才可以长久保存国家，使国家兴盛强大。也就是说言论自由是民众的基本权利，每个人都可以提出不同的政见，民众有平等参与政治的权利。
You may not control all the events that happen to you, but you can decide not to be reduced by them.
你或许无法控制发生在你身上的所有事情，但你可以决定不被它们打倒。
世界是一个舞台，但角色分配得很糟糕。
真正的进步来自于我们对人才和技术的双重投资。
We must listen to the whispers of the ancestors, for they hold the wisdom of the ages.
The most important part of teaching is to teach what it is to know.
The only real failure in life is not to be true to the best one knows.