The general will is always right， but the judgment which guides it is not always enlightened.

无论多难，我们都不会放弃。

修炼内丹的三个阶段：将精转化为气，将气转化为神，最终将神归于虚无。

The best designs are those that solve problems people didn't even know they had.

你的时间有限，所以不要浪费在过别人的生活上。

学习数学的唯一方法就是做数学。