翻译：强调知识对于改变事物形态的重要性。

"The only limit to our realization of tomorrow is our doubts of today."

The past is always tense, the future perfect.

写作是一种探索可能界限的方式。

沙漠教会沉默，沉默教会言语。

Giving up smoking is the easiest thing in the world. I know because I’ve done it thousands of times.

If you're trying to achieve, there will be roadblocks. I've had them; everybody has had them. But obstacles don't have to stop you. If you run into a wall, don't turn around and give up. Figure out how to climb it, go through it, or work around it.

质量不是一种行为，而是一种习惯。