You have to be able to adapt to changing market conditions. If you can't adapt, you won't survive.

大胆梦想，努力工作，永不放弃。

Mathematics is the art of giving the same name to different things.

真相很少是纯粹的，也从不简单。

你可以锁上你的图书馆；但对我的思想自由，你无法设置任何门闩、锁或插销。