"Forests, beyond offering us their plainly utilitarian wealth, have to perform vast physiological functions in the great economy of nature, by contributing predominantly in the empire of vegetation to the liberation of oxygen."

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The majority of men cannot be made disinterested for life by exhortation, by religious services, by any expenditure of subsidized works, or even by grave and manifest public need. They can be made permanently unselfish only by being helped to become disinterested in their individual purposes. In the complete democracy a man must in some way be made to serve the nation in the very act of contributing to his own individual fulfillment. Not until his personal action is dictated by disinterested motives can there be any such harmony between private and public interests.

— Herbert Croly