只有当人能够察看自己的内心深处时，他的视野才会变得清晰起来。向外看的人是在梦中、向内看的人是清醒的人。

选择最好的生活，因为习惯会使它愉快。

Sometimes, the most heroic act is to continue living.

You are no different than anybody else is.

If you're not stubborn, you'll give up on experiments too soon. And if you're not flexible, you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.

自由不是被给予的，而是被夺取的。