I would not have every man nor every part of a man cultivated, any more than I would have every acre of earth cultivated: part will be tillage, but the greater part will be meadow and forest, not only serving an immediate use, but preparing a mould against a distant future, by the annual decay of the vegetation which it supports.
我不希望每个人、每个人的每一部分都被开垦,正如不希望每一亩土地都被耕种:一部分可以成为耕地,更多的应是草地与森林,不仅服务当下,也让草木年年腐化,为遥远的未来积蓄沃土。
— Henry David Thoreau · Walking —