Words and deeds are not separate， but intimately connected.

I don’t want to prove anything; I just want to show what is possible.

旅行就是发现每个人对其他国家的看法都是错误的。

The beauty of a mathematical proof lies in its simplicity and inevitability.

And that's a lot of the reason why we care so much about our careers and indeed start caring so much about material goods. You know, we're often told that we live in very materialistic times, that we're all greedy people. I don't think we are particularly materialistic. I think we live in a society which has simply pegged certain emotional rewards to the acquisition of material goods. It's not the material goods we want;