Circular forms in art are often referred to as mandalas, the Sanskrit word for "sacred circle." For thousands of years the creation of circular, often geometric designs has been part of spiritual practices around the world and almost every culture has revered the power of the circle.
Blue mandala The mandala is an archetypal image whose occurrence is attested throughout the ages. It signifies the wholeness of the Self. This circular image represents the wholeness of the psychic ground, or to put it in mythic terms, the divinity of incarnate in man. ~ Carl Jung