生命中最伟大的事情是保持心灵年轻。

If you can keep your head when all about you are losing theirs and blaming it on you...

Environmental stewardship is not optional - it's our responsibility to future generations.

The most pleasing of all sounds, that of your own praise.

我们都是自己思想的囚徒，只有通过自我反思，我们才能获得自由。