"The individual produces an object and, by consuming it, returns to himself, but returns as a productive and self reproducing individual. Consumption thus appears as a moment of production."

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We are consuming our forests three times faster than they are being reproduced. Some of the richest timber lands of this continent have already been destroyed, and not replaced, and other vast areas are on the verge of destruction. Yet forests, unlike mines, can be so handled as to yield the best results of use, without exhaustion, just like grain fields.

— Theodore Roosevelt