The future of forestry lies in balancing economic needs with ecological responsibility.
The less I know about other people's affairs, the happier I am.
审判自己比审判别人难多了，如果你正确地审判了自己，那么你就是一个真正的智者了。
对自然的研究是永恒的乐趣。
When I approach a child, he inspires in me two sentiments; tenderness for what he is, and respect for what he may become.
宇宙是无限多样的。
走出去不是目的，走进去才是我们的目标。