森林的真正价值不能仅用板材英尺来衡量。
The true value of a forest cannot be measured in board feet alone.
Every failure in the lab teaches you something valuable—if you're paying attention.
改变你的思想,你就能改变你的世界。
使我们无法自由和高尚地活着的最主要原因是对财富的迷恋。