森林的真正价值不能用板材英尺来衡量，而应该用地球的呼吸来衡量。
To write is to live, to live is to write.
数学的快乐来自创造的行为，而不仅仅是结果。
Success comes from creating value for others and making a positive impact on the world.
The only way to get rid of a temptation is to yield to it.