Left to herself, nature is always more or less civilized, and delights in a certain refinement; but where the axe has encroached upon the edge of the forest, the dead and unsightly limbs of the pine, which she had concealed with green banks of verdure, are exposed to sight.
Henry David ThoreauIt is remarkable how long men will believe in the bottomlessness of a pond without taking the trouble to sound it.
Henry David ThoreauIt is worth the expense of youthful days and costly hours, if you learn only some words of an ancient language, which are raised out of the trivialness of the street, to be perpetual suggestions and provocations. It is not in vain that the farmer remembers and repeats the few Latin words which he has heard.
Henry David ThoreauWe have heard much about the poetry of mathematics, but very little of it has as yet been sung. The ancients had a juster notion of their poetic value than we. The most distinct and beautiful statements of any truth must take at last the mathematical form. We might so simplify the rules of moral philosophy, as well as of arithmetic, that one formula would express them both.
Henry David Thoreau