知识最大的敌人不是无知，而是知识的幻觉。

"The only limit to our realization of tomorrow is our doubts of today."

Everymorning I jump out of bed and step on a landmine. The landmine is me. After the explosion, I spent the rest of the day putting the pieces together.

出自汉·桓宽《盐铁论·申韩》。善于治理国家的人，一发现弊病就立即补救，一看到漏洞就立即堵塞。