创新就是在红海中找到蓝海。
Innovation is finding blue ocean in the red sea.
A mathematician's work is never truly finished; there is always more to explore.
最高深的道理往往是最简单的,但演化出的变化却极其复杂。
The aim of proof is to understand, not just to verify.
The utility of an idea determines its place in mental life.