我认为最好的关系是你可以完全做自己的关系。
I think the best relationships are the ones where you can be completely yourself.
Every mathematical problem is a puzzle waiting to be solved, and every solution is a step towards greater understanding.
The only service a friend can really render is to keep up your courage by holding up to you a mirror in which you can see a noble image of yourself.
过去从未死去，它甚至不是过去。
Innovation is not just about technology; it's about changing the way people think and live.