对中国国民党同志共勉，1920年1月1日

正义的理念与法律的理念并不相同。

It was like when you make a move in chess and just as you take your finger off the piece, you see the mistake you’ve made, and there’s this panic because you don’t know yet the scale of disaster you’ve left yourself open to.

I believe that love is a better teacher than the sense of duty， he said， at least for me.

请求原谅比获得许可更容易。

色散理论是量子力学中最美丽的篇章。