可持续性不是一种选择，而是我们对后代的责任。

The poem is a way of living in the world, not just observing it.

"The stream of consciousness flows toward purposeful ends."

Courage to fail is just as important as the will to succeed.

我们实现明天的唯一限制将是我们今天的怀疑。

I believe that love is a better teacher than the sense of duty， he said， at least for me.