We must invest in people as much as we invest in technology.

成绩差距主要是知识差距。

You must take personal responsibility. You cannot change the circumstances, the seasons, or the wind, but you can change yourself.

数学家们至今徒劳地试图在素数序列中发现某种规律，我们有理由相信这是一个人类思维永远无法穿透的谜题。