Mathematics is the language with which God has written the universe.
幽默是处理生活荒谬性的一种方式。
To feel much for others and little for ourselves； to restrain our selfishness and exercise our benevolent affections， constitute the perfection of human nature.
未经省察的人生不值得过。
真正的进步发生在我们停止捍卫现状并开始挑战它的时候。