没有对人类的热爱，英雄又是什么？

In an uncertain era, the only certainty is change itself.

【讲解】：（教学生）不到他苦思冥想怎么也弄不明白的时候，不去开导他；不到他想说而又说不出来的时候，不去启发他。告诉他（四方形）的一个角，他不能由此推出另外三个角，就不再往下教他（新知识）了。

We need to design policies that work with human psychology, not against it.

These walls are kind of funny like that. First you hate them, then you get used to them. Enough time passed, get so you depend>