in Thoreau’s Journal:
The sad memory of departed friends is soon incrusted over with sublime and pleasing thoughts, as their monuments are overgrown with moss. Nature doth thus kindly heal every wound. By the mediation of a thousand little mosses and fungi the most unsightly objects become radiant with beauty. There seem to be two sides of this world presented to us at different times, as we see things in growth or dissolution, in life or death….
If we see Nature as pausing, immediately all modifies and decays; but seen as progressing she is beautiful.