The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

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。

When given the choice between being right or being kind , choose kind.

伟大的工程是无形的——它只是无缝地运作。

幸福不是好运或外部事件的结果，而是我们解释这些事件的方式。