我认为如果你做了某件事，结果还不错，那么你应该去做其他精彩的事情，不要停留太久。只要弄清楚下一步是什么。

The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

Success is measured not just by profits, but by the positive impact we have on the world.

预见数学未来的真正方法是研究它的历史和现状。