可持续性不仅仅是植树;它是为了正确的理由在正确的地方种植正确的树木。
Insanity is repeating the same mistakes and expecting different results.
The problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence.
我相信我们在美国迷失了,但我相信我们会被找到。
The secret of getting ahead is getting started.
No one is free, even the birds are chained to the sky.