“Make a circle out of a man and woman, from which a quadrangular body arises with equal sides. Derive from it a triangle, which is in contact on all sides with a round sphere: Then the Stone will have come into existence. If such a great thing is not immediately clear in your mind, then know, that you will understand everything, if you understand the theory of Geometry”. From “Atalanta Fugiens” by Michael Maier (1617).