You must walk sometimes perfectly free, not prying or inquisitive, not bent on seeing things. Throw away a whole day for a single expansion, a single inspiration of air. You must walk so gently as to hear the finest sounds, the faculties being in repose. Nature will bear the closest inspection. She invites us to lay our eye level with her smallest leaf, and take an insect view of its plain.
Henry David ThoreauYou can hardly convince a man of an error in a lifetime, but must content yourself with the reflection that the progress of science is slow. If he is not convinced, his grandchildren may be.
Henry David ThoreauSome would find fault with the morning, if they ever got up early enough.. The fault find faults even in Paradise.
Henry David ThoreauNot secondary to the sun, she gives us his blaze again, Void of its flame, and sheds a softer day... In Heaven queen she is among the spheres; She, mistress-like, makes all things to be pure.
Henry David ThoreauThe way in which men cling to old institutions after the life has departed out of them, and out of themselves, reminds me of those monkeys which cling by their tails - aye, whose tails contract about the limbs, even the dead limbs, of the forest, and they hang suspended beyond the hunter's reach long after they are dead. It is of no use to argue with such men. They have not an apprehensive intellect, but merely, as it were a prehensile tail.
Henry David Thoreau