Nature, in the usual sense, refers to elements unaltered by people; the environment, the air, a river, a leaf. Art refers to infusing your will into the same elements, like in a house, a canal, a statue, a painting. But the sum of these operations is so negligible—a little whittling, baking, patching, and washing—that compared to the profound impression the world makes on the human mind, they cannot change the outcome.