Under heaven all can see beauty as beauty only because there is ugliness. All can know good as good only because there is evil.
–Lao Tzu, Tao Te Ching
As promised, below is the original photo used to create this image. It’s a lichen and moss covered tree trunk and exposed roots from my backyard. Taken on an overcast day with no special lighting or retouching, just a snap from my smart phone. In Photoshop, I also added a flower-shaped layer mask and a gradient fill for the background.