勿羡慕那些生活在愚昧“天堂”的人们，因为只有愚人才认为那里是幸福的。

Sustainability isn't an option—it's a necessity for the future of our planet.

人生最大的悲剧不是死亡，而是没有真正活过。

So that morning in 1962 I told myself: Let everyone else call your idea crazy . . . just keep going. Don’t stop. Don’t even think about stopping until you get there, and don’t give much thought to where “there” is. Whatever comes, just don’t stop.

我从底层爬起来，但我没忘记起点。