一个人愈没有值得自夸之处，就愈容易夸耀自己的国家、宗教、种族或他参与的神圣事业。

每个采石场都有一个写在岩石层和几代工人中的故事

小心你讨厌的人，可能是你某天必须合作的对象。

Man is least himself when he talks in his own person. Give him a mask, and he will tell you the truth.

In mathematics, the journey from question to answer is often more enlightening than the answer itself.

最优财政政策要求税率随时间平稳变化，仅对政府支出的永久性变化作出反应。