The first man who， having enclosed a piece of ground， bethought himself of saying 'This is mine，' and found people simple enough to believe him， was the real founder of civil society.

过去是我们背负的负担，以我们无法总是理解的方式塑造我们的现在和未来。

物理学的美丽在于它能够用简单的原理解释宇宙的复杂性。