Modern forestry must balance three axes: ecology, economy and ethics.

技术是这样一种诀窍，它安排世界，使我们不必去体验它。

生活的秘诀在于享受被骗得很惨的乐趣。

Government, even in its best state, is but a necessary evil; in its worst state, an intolerable one.

质数就是当你把所有模式都剔除后剩下的东西。我觉得质数就像生活，它们非常有逻辑性，但你永远无法找出规律，即使你花上一辈子时间去思考。