随着你的成长，你会发现你的两只手中一只手是自助的，另一只是来帮助他人的。
As you grow older, you will discover that you have two hands, one for helping yourself, the other for helping others.
The past is full of voices—we just have to listen.
《在广州石围塘检阅滇均的演说》（1924年4月4日）
艺术家必须是绝对的仆人。
"In the end, we will remember not the words of our enemies, but the silence of our friends."
A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories.