A good mathematician is one who can see analogies between theorems; a great mathematician is one who can see analogies between analogies.

最危险的谎言是我们对自己说的谎言。

可持续性不是一种趋势，而是我们对未来的责任。

The true meaning of life is to plant trees, under whose shade you do not expect to sit.

我们关注的不是数字，而是产生数字的那些东西。