The most powerful tool in science is not technology, but imagination.

The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.

在数学中，旅程和目的地同样重要；发现的过程才是真正学习的地方。

我一直以为人是慢慢变老的，其实不是，人是一瞬间变老的。

I’ve come to the conclusion that if someone doesn’t like me for being myself, it’s their loss.

思想之流即生存之流。