The best way to learn mathematics is to do mathematics.

我永远不会改变到让人认不出来。

The more the division of labor and the application of machinery extend, the more does competition extend among the workers, the more do their wages shrink together.

我们写的每一个字都是朝着理解自己和周围世界迈出的一步。

竞争战略就是要做到与众不同。要学会有意识地选择一系列不同的行动以创造独特的价值组合。

我写歌是为了治愈自己，也治愈别人。