出自汉·桓宽《盐铁论·地广》。释义：不因为是自己的亲近就给以重赏；也不因为与自己疏远就忘掉给人恩惠。

The world is full of people who have never, since childhood, met an open doorway with an open mind.

I'm not a person who gives up on my light.

"I think that mathematicians are much more like artists than they are like scientists."

We are all alone in this world, and we must find our own way.

——《在广州商团及警察联欢会的演说》（1924年1月14日）