解析：天地之所以能长久存在，是因为它们的一切运作都不为自己，所以能够长久。

有了目标就要全力以赴。

Life is too important to be taken seriously.

The conjectures of the Langlands program are not merely problems to be solved but a vision of how mathematics should be.

I'm the reason your sound won't echo.

It’s not what we do once in a while that shapes our lives, but what we do consistently.

Government, even in its best state, is but a necessary evil; in its worst state, an intolerable one.