Thoreau could speculate that even a slight shift in…

““Thoreau could speculate that even a slight shift in natural processes—a little colder winter, a little higher flood—might put an end to humanity, so dependent are we on a wild nature that gives us no guarantees. Hence he emphasized living "deliberately"; that is, living so as to perceive and weigh the moral consequence of our choices. "Civil Disobedience" insists that the choices we make create our environment, both political and natural—all the choices, even the least and most seemingly trivial. The sum of those choices is weighed on the scales of the planet itself, a planet that is, like Walden Pond, sensitive and alive, quick to measure the least change and register it in sound and form. To Thoreau this was cause for tremendous optimism: as the village expanded and the old trees fell, he planted new ones and reveled in the young forest. If the English settlers had wiped out many of New England's animals—beaver, wolf, bear and cougar, moose and deer, wild turkey—still there was much remaining, enough to assure him the wild was everywhere, ready to reseed and reclaim what it had lost. His last, unfinished works, Wild Fruits and The Dispersion of Seeds, emphasize how the smallest of seeds, let loose on the winds or carried by the least of beings, could transform the world. All humans need to do is learn to work with instead of against the vital currents of life. The Books Thoreau didn't live to finish are about building a community of life, and he died in the faith his words, like seeds, would take root and grow. Exactly insofar as we, today, share his belief in the future of life and act on it, will he continue to speak to us.””

— Laura Dassow Walls