The best forestry practices are those that leave no trace but leave everything changed.

He that falls in love with himself, will have no rivals.

We have a responsibility to use our science to improve lives, not just to make profits.

自由是一个沉重的负担，是精神承担的一个伟大而奇怪的负担。

预测未来的最好方法就是创造未来。