物理学上的镜面反射理论，也同样适用于人情世故。爱敬别人的人，同样也会得到别人的爱敬；厌恶别人的人，同样也会遭到别人的厌恶。
The discipline of the written word punishes both stupidity and dishonesty.
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
A mathematician is a device for turning coffee into theorems.
圣人与物相处而不伤害，不伤害外物的，外物也不伤害他。正因为无所伤害，才能自然地与人交往。山林啊，大地啊，都能使我欣然快乐。
The most successful companies don't just sell products—they solve problems.