每个人都是自己故事里的英雄。
"Every man is the hero of his own story."
Rigor in proof is what separates mathematics from all other sciences.
中央银行需要成为房间里那个成熟的大人。
The highest task of education is to develop in the individual a sense of responsibility towards humanity.
那时我太老了，现在反而年轻了。