我们认为正确的事情有时会被证明是错误的，而我们认为是错误的事情有时会被证明是正确的。
The art of living is to know when to hold fast and when to let go.
贫穷是犯罪的温床。
Believe you can and you're halfway there.
Courage consists not in hazarding without fear； but being resolutely minded in a just cause.
不同元素的原子通过它们的重量相互区分。
A mathematician is a device for turning coffee into theorems.
只有一种真正的罪过，那就是说服自己次好的东西不仅仅是次好的。