You can't knock on opportunity's door and not be ready.

变老的最大好处是你不需要担心未来。

These walls are really interesting. At first you hate it, then you get used to it. After a considerable period of time, you will depend on it.

译文：与其在生病后去求取药物，不如在生病前做好自我的预防。赏析：任何事都要提前谋划，防患未然，事到临头才不会手忙脚乱。平时不烧香，临时抱佛脚是没有用的。