The Sufis recognize substance or matter as an actuality. It is the outer or physical, material world. It is an attribute of the great unity. It is not as some schools of mysticism and of philosophy affirm, an illusion—a product merely of man’s receptor senses. It is and includes actual substances. Things are as they seem to be. All matter is a negative aspect of this one great unity. The positive aspect or attribute is invisible. It is a higher world, a world which man experiences within himself, the world of soul or spiritual inclination. We, mankind, so the Sufis claim, are an objectification of God, the material form of God, His consciousness clothed in substance.