我们不是从祖先那里继承地球；我们是从子孙那里借来的——这在林业中尤其如此。
We don't inherit the earth from our ancestors; we borrow it from our children—this is especially true in forestry.
要理解世界，你必须首先寻求理解自己。
The strongest weapon you have is your mind. Train it well.
伟大的诗歌是那些超越自身时代的作品。