学习如何生活，而不是如何生存。
It is better for you to be free of fear lying upon a pallet, than to have a golden couch and a rich table and be full of trouble.
History is, above all else, the creation and recording of that heritage; progress is its increasing abundance, preservation, transmission, and use.
True intelligence is about making machines understand human intentions, not making humans adapt to machines.
世界因你的榜样而改变，而不是因你的观点而改变。
Innovation in forestry isn't optional—it's essential for survival.《The Green Frontier》