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.

"The only way to do great work is to love what you do."

In mathematics, you don't understand things. You just get used to them.

我不是青少年，我是女王。

创新是可持续发展的关键。

最大的风险是不冒险。