道虽迩，不行不至；事虽小，不为不成。
千里之行，始于足下，再近的道路，如果你不走，就永远不能到达；一屋不扫，何以扫天下？再小的事情，你都不去做，何谈成功？
写作的艺术就是发现你所相信之物的艺术。
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge.
试图阻止知识前进是没有好处的。无知永远不比知识好。
优化是在给定约束条件下做出最佳决策的艺术。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
Remaining quiet is what is called wisdom-insight.