过去是一个异国；他们在那里的做法不同。
The past is a foreign country; they do things differently there.
在自然状态下，利益是权利的尺度。
真正成功的唯一方法是为他人创造价值。
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.
代数分析很快让我们忘记了研究的主要对象，将注意力集中在抽象的组合上，直到最后我们才回到最初的目标。