反应倾向的强度取决于所接受的强化量。
文学永远是一场通往真理的远征。
哲学，就我对这个词的理解来说，乃是某种介乎神学与科学之间的东西。
做出伟大工作的唯一途径是热爱你所做的事。
The writer’s joy is the thought that can become emotion, and the emotion that can wholly become a thought.
对幸福的追寻是不幸福的主要原因之一。
Innovation in forestry means listening to centuries-old wisdom while embracing cutting-edge science.