出自汉·桓宽《盐铁论·论灾》。兵器是凶器。盔甲坚固，兵器锋利，那是天下的祸害。此言战争对人类的危害性，寄寓了反对战争的思想。

The greatest tragedy of modern life is that we have everything we want, but nothing we need.

The past is never really past; it lingers in the corners of our lives.

最好的科学是双手弄脏而头脑清醒时完成的。

The laws of physics are the same everywhere in the universe, and that is a profound truth.

我们都被自己制造的幽灵所困扰。