唯一值得称道的自由是追求我们自己的利益的自由方式，只要我们不试图剥夺别人的利益或妨碍他们获得自己的利益。
The only freedom which deserves the name is that of pursuing our own good in our way， so long as we do not attempt to deprive others of theirs or impede their efforts to obtain it.
不要批评你不理解的东西。
The future of forestry lies in technology, but it must serve nature, not exploit it.