"The positive thinker is a hard-headed, tough-minded, and factual realist. He sees all the difficulties clearly... which is more than can be said for the average negative thinker. But he sees more than difficulties - he tries to see the solutions of those difficulties."

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The lumbermen...regarded forest devastation as normal and second growth as a delusion of fools....And as for sustained yield, no such idea had ever entered their heads. The few friends the forest had were spoken of, when they were spoken of at all, as impractical theorists, fanatics, or "denudatics," more or less touched in the head. What talk there was about forest protection was no more to the average American that the buzzing of a mosquito, and just about as irritating.

— Gifford Pinchot