有人认为坚持使我们强大，但有时放手才是最好的。

Resilience is what keeps us moving forward in the face of challenges.

证明的优雅与其正确性同样重要。

The meaning of a word is not a mental entity， but a social practice.

自然定律相对于参考系变换的对称性是物理学最基本的原理之一。

Every individual has a place to fill in the world and is important in some respect whether he chooses to be so or not.

我不敢说自己从未担心害怕过。 实际上我希望少一点担心害怕，因为它让我分心，使我焦虑。

Most men die at twenty or thirty; thereafter they are only reflections of themselves.