We seem to think that the earth must go through the ordeal of sheep-pasturage before it is habitable by man.
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 ThoreauIf it is asserted that civilization is a real advance in the condition of man,--and I think that it is, though only the wise improve their advantages,--it must be shown that it has produced better dwellings without making them more costly; and the cost of a thing is the amount of what I will call life which is required to be exchanged for it, immediately or in the long run.
Henry David Thoreau