The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.

The key to good design is understanding forces.

如果你无法简单地解释它，说明你理解得还不够透彻。

译文：祖国沉沦每个人都有责任，我在天涯漂泊没有家。

从长远来看，重要的不是市场的波动，而是业务的持久性。