数学中最深刻的思想往往源于最简单的观察。
The most profound ideas in mathematics often arise from the simplest observations.
When I accept myself as I am, then I can change.
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.
习俗并非任何协议或契约的结果，而是长期发展过程的产物，在此过程中它们适应了社会的生活条件。
触摸就是记忆。
