Leadership means making tough decisions today for a better tomorrow.

Human beings are not born once and for all on the day their mothers give birth to them, but life obliges them over and over again to give birth to themselves.

A true mathematician is always a student, always learning.

"The past is never dead. It's not even past."

宇宙是一个全息图，我们都是这个宏伟宇宙投影的一部分。

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;

No man or woman is worth your tears， and the one who is， won‘t make you cry。