The future of forestry lies in balancing economic growth with ecological preservation.

"The role of business is to produce products and services that make people's lives better—while using fewer resources—and to act lawfully and with integrity."

The great question which, in all ages, has disturbed mankind, and brought on them the greatest part of their mischiefs, has been, not whether there be power in the world, nor whence it came, but who should have it.

The actions of men are the best interpreters of their thoughts.

没有伟大的意志力，便没有雄才大略。

心理过程的价值在于它对有机体适应生活的效用。

文章是用来阐明道理的。如果不能阐明道理，即使写得精巧也没有益处。

有时最艰难的战斗是我们内心的战斗。