做出伟大事情的唯一方法是热爱你所做的事。

——〈在北京湖广会馆学界欢迎会的演说〉，1912年8月30日

对的就说是对的，错的就说是错的，就是所谓的正直。

The true power of an algorithm is not in its speed or efficiency, but in its ability to reveal the hidden structures of the problems it addresses.

The most beautiful thing in mathematics is the simplicity of the ideas behind the complexity.

预测未来的最好方式就是创造未来。