正如几何学最自然的起点是数学点，在观察和自然历史中采用同样的方法也最真实、简单且富有教益。
As in geometry the most natural way of beginning is from a mathematical point, so is the same method in observations and natural history the most genuine, simple, and instructive.
唱歌是我与世界对话的方式。
Trade between two countries can be mutually beneficial, even if one of them is less efficient in the production of all commodities.
Surround yourself with people who challenge you, not just those who agree with you.
我们来狂欢我们来狂欢
领导者是知道方向、走在前方并指明方向的人。