In wildness is the preservation of the world. - Henry David Thoreau
Nature confronts us with its beauty in a flower or a furry animal. The awesomeness of nature is in a lightning bolt or a majestic mountain. Every variety of tree has its own uniquely textured bark. Each annual ring in a tree trunk is a natural record of the growing conditions in each year it grew. These things remind us we are not in charge, and we are moved by the experience.
This "wildness" is everywhere around us, and we are renewed by it when we interact with it. At night, in the city, we look up and see the ancient moon. When we live with a pet, it reminds us we are creatures too. We are part of this larger whole. We don't just appreciate nature -- we are nature. When we open our eyes and learn to be a part of it, it renews and lifts our spirits.