The right of nature... is the liberty each man hath, to use his own power, as he will himself, for the preservation of his own nature; that is to say, of his own life.

无论是个人还是国家，只要生活节俭，就会繁荣昌盛；如果贪图享受，放纵欲望，那就会走向衰亡。

I'm the kind of person that has to learn the hard way.

物理学的美不在于拥有所有答案，而在于提出更好的问题。