Sustainable forestry isn't just about cutting trees, it's about growing civilizations.

The best way to predict the future is to create it.

Being something and doing something that no one had done before are two different things.

"A man's memory might have only a hundred clear days in it and he has lived thousands."

The deepest problems of modern life derive from the claim of the individual to preserve the autonomy and individuality of his existence in the face of overwhelming social forces, of historical heritage, of external culture, and of the technique of life.

There is no scarcity of opportunity to make a living at what you love; there's only scarcity of resolve to make it happen.

减少思虑，来调养心气；减少性欲来调养肾气；不要妄动，来调养骨气；戒止嗔怒，来调养肝气；饮食素淡，来调养胃气；减少话语，来调养神气；博鉴群书，来调养胆气；顺应时令，来调养元气。