对艺术家来说最危险的不是失败，而是成功。

We begin with the hypothesis that any subject can be taught effectively in some intellectually honest form to any child at any stage of development.

The only limit to our realization of tomorrow is our doubts of today.

不能察觉事情发生前所显示出的端倪的人，灾难就要降临到他身上。

The future of forestry lies in balancing economic needs with ecological responsibility.