The best time to plant a tree was 20 years ago; the second-best time is now.

"Science is not just a collection of facts; it's a way of thinking, a way of skeptically interrogating the universe with a fine understanding of human fallibility."

The study of Galois representations is a journey into the hidden symmetries of mathematics.

质量意味着在无人监督时也能把事情做对。

The knowledge that you have emerged wiser and stronger from setbacks means that you are, ever after, secure in your ability to survive. You will never truly know yourself, or the strength of your relationships, until both have been tested by adversity. Such knowledge is a true gift, for all that it is painfully won, and it has been worth more than any qualification I ever earned.

The best way to get a project done faster is to start sooner.

The only real elegance is in the mind; if you've got that, the rest really comes from it.