Second Theory.—The theory of all philosophers whose opinions and works are known to us is this: It is impossible to assume that God produced anything from nothing, or that He reduces anything to nothing; that is to say, it is impossible that an object consisting of matter and form should be produced when that matter is absolutely absent, or that it should be destroyed in such a manner that that matter be absolutely no longer in existence. To say of God that He can produce a thing from nothing or reduce a thing to nothing is, according to the opinion of these philosophers, the same as if we were to say that He could cause one substance to have at the same time two opposite properties, or produce another being like Himself, or change Himself into a body, or produce a square the diagonal of which be equal to its side, or similar impossibilities. The philosophers thus believe that it is no defect in the Supreme Being that He does not produce impossibilities, for the nature of that which is impossible is constant—it does not depend on the action of an agent, and for this reason it cannot be changed. Similarly there is, according to them, no defect in the greatness of God, when He is unable to produce a thing from nothing, because they consider this as one of the impossibilities. They therefore assume that a certain substance has co-existed with God from eternity in such a manner that neither God existed without that substance nor the latter without God. But they do not hold that the existence of that substance equals in rank that of God; for God is the cause of that existence, and the substance is in the same relation to God as the clay is to the potter, or the iron to the smith; God can do with it what He pleases; at one time He forms of it heaven and earth, at another time He forms some other thing. Those who hold this view also assume that the heavens are transient, that they came into existence, though not from nothing, and may cease to exist, although they cannot be reduced to nothing. They are transient in the same manner as the individuals among living beings which are produced from some existing substance, and are again reduced to some substance that remains in existence. The process of genesis and destruction is, in the case of the heavens, the same as in that of earthly beings. The followers of this theory are divided into different schools, whose opinions and principles it is useless to discuss here; but what I have mentioned is common to all of them. Plato holds the same opinion. Aristotle says in his Physics, that according to Plato the heavens are transient. This view is also stated in Plato’s Timæus. His opinion, however, does not agree with our belief; only superficial and careless persons wrongly assume that Plato has the same belief as we have. For whilst we hold that the heavens have been created from absolutely nothing, Plato believes that they have been formed out of something.—This is the second theory.