Sun and moon, light and dark, sunrise and sunset, opposites and yet complementary.
You can look at only one side, but if you look well, you will see the lines of the other, and will add complexity to what you see, because everything is part of the piece. You only see some colors, but if you notice, some ones will be added and will appear others.
You can look at the sun or moon, you can look from the sun or the moon, you can look through the moon or the sun. You choose how you want to look all times.