好与伟大之间的区别在于对细节的关注。
We are all the sum of our contradictions.
The most exciting moments in mathematics are when you realize that two seemingly unrelated areas are deeply connected.
选自汉·桓宽《盐铁论·力耕》。道：放大。治理百姓的方法，在于节约用度，注重农桑。
心是脆弱的东西，容易破碎，但也有着难以置信的韧性。
Small actions, multiplied by millions, can transform the world.
The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.