The best way to cheer yourself up is to try to cheer somebody else up.

To every action there is always opposed an equal reaction； or， the mutual actions of two bodies upon each other are always equal， and directed to contrary parts.

万物浑然天成，吾辈因何而生?

算法的创新往往来自于以新的方式看待旧问题。

I am interested in the human condition, in what it means to be alive, in the nature of existence.

爱一个人不需要理由。