我们学得越多，就越意识到我们不知道的还有很多。

忧伤愁苦，就会心气滞结；忿怨愤怒，就会心气横逆不顺；惊恐畏惧，就会心气沉落不浮；拘谨固执，就会心气郁郁不释；急躁浮躁，就会心气损耗不足。

人是自己的囚犯。

I look back on the past, committed a felony little fool, I want to communicate with him and let him understand, but I can't do this, the boy would not see the, only my old trunk.

在数学中，旅程和目的地同样重要，因为正是通过发现的过程，我们才能真正学习。