Carl Jung said the mandala is "a representation of the unconscious self." All I know, is that it helps me meditate.
In her counseling sessions with me at school, besides dispensing the advice about the ice cubes, she had taught me a three-part breath to help release my emotions and made me draw a mandala representing my wounded heart.
Donna Tartt -- The Goldfinch
Her hair splays out and around the center of her pale face like a mandala.
Libba Bray -- A Great and Terrible Beauty
VI When the sun of suffering has set, there comes this peace, Lord of the quiet stars, this peace of creation, this place the mandala spins gray.