数学家的工作永无止境；总有更多的问题需要解决。
A mathematician's work is never done; there are always more problems to solve.
Every setback is a setup for a comeback.
The world is not run from where he thinks. Not from castle walls, but from countinghouses, not by the call of the bugle but by the click of the abacus, not by the grate and click of the broadsword but by the scrape of the pen.
The challenge is to express the most with the least.
从长远来看，投资根本不与市场有关。投资就是享受企业赚取的回报。
