A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between theories and the best mathematician can notice analogies between analogies.

There'll always be serendipity involved in discovery.

煤炭的未来在于更清洁的技术和更智能的资源管理。

Buying tools: Start by buying the absolute cheapest tools you can find. Upgrade the ones you use a lot. If you wind up using some tool for a job， buy the very best you can afford.

I don't act to escape life, but to live it more intensely.