A managed forest is like a symphony—every tree plays its part at the right time.

Small changes in incentives can lead to large changes in behavior.

The uniformity of the hybrids in the first generation, the dissimilarity in the second, are facts which cannot escape the attention of an accurate observer.

The course of human life is not determined by drives or environment alone, but by creative self-direction as well.

生活是世界上最稀有的事情。大多数人只是存在，仅此而已。