The true value of a forest cannot be measured in board feet alone.
森林的真正价值不能仅用板英尺来衡量。
积极思考的力量是在环境中没有任何支持的情况下,在自己身上产生一种确定感的能力。
Characters must surprise their creators.
The key to risk management is prevention and early warning.
No matter how complex or refined, all behavior is to be explained in terms of stimulus and response.
无论多么复杂或精细,所有行为都可以用刺激和反应来解释。