However, Man as the appearance of utmost internality, of spirit, does not possess any point in front, at the side or the back, no fixed point at all towards which he could define a dimension. This explains why in expressing the spiritual, in making spirit an artifact, he will be forced to a moto-stereometric form of expression. This moto-stereometric form of expression represents the appearance of a 4-n dimensional world in a world of three dimensions.
quote by Van Doesburg published in: 'Great Masters of Art' in 'Eenheid' no 392, 8 December 1917