7. From this, I trust, it is now made patent to spiritual minds that there cannot possibly exist any nature contrary to God. For if He is,—and this is a word which can be spoken with propriety only of God (for that which truly is remains unchangeably; inasmuch as that which is changed has been something which now it is not, and shall be something which as yet it is not),—it follows that God has nothing contrary to Himself. For if the question were put to us, What is contrary to white? we would reply, black; if the question were, What is contrary to hot? we would reply, cold; if the question were, What is contrary to quick? we would reply, slow; and all similar interrogations we would answer in like manner. When, however, it is asked, What is contrary to that which is? the right reply to give is, that which is not.