To preserve wild animals implies generally the creation of a forest for them to dwell in or resort to. So it is with man. A hundred years ago they sold bark in our streets peeled from our own woods. In the very aspect of those primitive and rugged trees there was, methinks, a tanning principle which hardened and consolidated the fibres of men's thoughts. Ah! already I shudder for these comparatively degenerate days of my native village, when you cannot collect a load of bark of good thickness, and we no longer produce tar and turpentine.
Henry David ThoreauWhen any real progress is made, we unlearned and learn anew what we thought we knew before.
Henry David ThoreauWhen the chopper would praise a pine, he will commonly tell you that the one he cut was so big that a yoke of oxen stood on its stump; as if that were what the pine had grown for, to become the footstool of oxen.
Henry David ThoreauThe civilized nations--Greece, Rome, England--have been sustained by the primitive forests which anciently rotted where they stand. They survive as long as the soil is not exhausted. Alas for human culture! little is to be expected of a nation, when the vegetable mould is exhausted, and it is compelled to make manure of the bones of its fathers. There the poet sustains himself merely by his own superfluous fat, and the philosopher comes down on his marrow-bones.
Henry David Thoreau