He then traces the history of philosophical thinking in Jewish mediæval literature from the time of the Geonim, and tells us that the little that is found of the Kalam concerning the Unity of God and related topics in the works of some of the Geonim and the Karaites in the East is borrowed from the Mutakallimun of the Mohammedans and constitutes a small fraction of the writings of the latter on this subject. The first attempt in this direction among the Moslems was that of the party known as the Muʿtazila, whom our people followed. Later came the party of the Ashariya with different opinions which, however, were not adopted by any of our people. This was not due, he tells us, to a deliberate decision in favor of the Muʿtazila, but solely to the historical accident of their chronological priority. On the other hand, the Spanish Jews of Andalusia adopted the views of the philosophers, i. e., the Aristotelians, so far as they are not in conflict with our religion. They do not follow the Mutakallimun, and hence what little of the subject is found in the works of the later writers of this class resembles our own method and views.[261]

There seems no doubt that whatever other Spanish writers Maimonides had in mind, whose works are not extant, his characterization fits admirably the "Emunah Ramah" of Abraham Ibn Daud (cf. above, p. [217]), and in a less degree it is also true of Ibn Gabirol, Bahya, Judah Halevi, Moses and Abraham Ibn Ezra. Bahya as we saw above (p. [86]) still retains a good deal of Kalamistic material and so does Ibn Zaddik (p. [126]). As for Mukammas, Saadia and the two Karaites Al Basir and Jeshua ben Judah, we have seen (pp. [17], [24], [48], [56]) that they move wholly in the ideas of the Mutakallimun. It becomes of great interest for us therefore to see what Maimonides thinks of these Islamic theologians, of their origins, of their methods and of their philosophical value. Maimonides's exposition and criticism of the principles of the Mutakallimun is of especial interest, too, because up to recent times his sketch of the tenets of this school was the only extensive account known; and it has not lost its value even yet. We shall, however, be obliged to abridge his detailed exposition in order not to enlarge our volume beyond due limits. Besides, there is no occasion for repeating what we have already said of the Kalam in our Introduction (p. [xxi ff.]); though the account there given was not taken from Maimonides and does not follow his order.

Maimonides is aware that the Arabs are indebted to the Christians, Greeks as well as Syrians. The Muʿtazila and Ashariya, he says, base their opinions upon premises and principles borrowed from Greek and Syrian Christians, who endeavored to refute the opinions of the philosophers as dangerous to the Christian religion. There was thus a Christian Kalam prior to the Mohammedan.[262] Their method was to lay down premises favorable to their religion, and by means of these to refute the opinions opposed to them. When the Mohammedans came upon the scene and translated the works of the philosophers, they included in their work of translation the refutations composed by the Christians. In this way they found the works of Philoponus, Yahya ben Adi and others; and adopted also the opinions of the pre-Socratic philosophers, which they thought would be of help to them, though these had already been refuted by Aristotle, who came after. Such are the atomic theory of matter and the belief in the existence of a vacuum. These opinions they carried to consequences not at all contemplated by their authorities, who were closer to the philosophers.

To characterize briefly the methods of the Mutakallimun, Maimonides continues, I would say that the first among them, the Greeks and the Mohammedans, did not follow reality, but adopted principles which were calculated to help them in defending their religious theses, and then interpreted reality to suit their preconceived notions. The later members of the school no longer saw through the motives of their predecessors and imagined their principles and arguments were bona fide refutations of philosophical opinions.

On examination of their works I found, he continues, that with slight differences they are all alike. They do not put any trust in reality and nature. For, they say, the so-called laws of nature are nothing more than the order of events to which we are accustomed. There is no kind of necessity in them, and it is conceivable they might be different. In many cases the Mutakallimun follow the imagination and call it reason. Their method of procedure is as follows. They first state their preliminary principles, then they prove that the world is "new," i. e., created in time. Then they argue that the world must have had an originator, and that he is one and incorporeal. All the Mutakallimun follow this method, and they are imitated by those of our own people who follow in their footsteps.

To this method I have serious objections, continues Maimonides, for their arguments in favor of the creation of the world are not convincing unless one does not know a real demonstration from a dialectical or sophistic. The most one can do in this line is to invalidate the arguments for eternity. But the decision of the question is by no means easy, as is shown by the fact that the controversy is three thousand years old and not yet settled. Hence it is a risky policy to build the argument for the existence of God on so shaky a foundation as the "newness" of the world. The best way then, it seems to me, is to prove God's existence, unity and incorporeality by the methods of the philosophers, which are based upon the eternity of the world. Not that I believe in eternity or that I accept it, but because on this hypothesis the three fundamental doctrines are validly demonstrated. Having proved these doctrines we will then return to the problem of the origin of the world and say what can be said in favor of creation.[263]

This is a new contribution of Maimonides. All the Jewish writers before Halevi followed in their proofs of the existence of God the method designated by Maimonides as that of the Kalam. Judah Halevi criticised the Mutakallimun as well as the philosophers in the interest of a point of view all his own (pp. [176 ff.], [182]). Ibn Daud tacitly ignored the Kalam and based his proof of the existence of God upon the principles of motion as exhibited in the Aristotelian Physics, without, however, finding it necessary to assume even provisionally the eternity of motion and the world (p. [217 ff.]). His proof of the incorporeality of God is, as we have seen (ibid.), weak, just because he does not admit the eternity of motion, which alone implies infinity of power in God and hence incorporeality. Maimonides is the first who takes deliberate account of the Mutakallimun, gives an adequate outline of the essentials of their teaching and administers a crushing blow to their principles as well as their method. He then follows up his destructive criticism with a constructive method, in which he frankly admits that in order to establish the existence, unity and incorporeality of God—the three fundamental dogmas of Judaism—beyond the possibility of cavil, we must make common cause with the philosophers even though it be only for a moment, until they have done our work for us, and then we may fairly turn on our benefactors and taking advantage of their weakness, strike them down, and upon their lifeless arguments for the eternity of the world establish our own more plausible theory of creation. The attitude of Maimonides is in brief this. If we were certain of creation, we should not have to bother with the philosophers. Creation implies the existence of God. But the question cannot be strictly demonstrated either way. Hence let us prove the existence of God on the least promising hypothesis, namely, that of eternity, and we are quite secure against all possible criticism.

Of the twelve propositions of the Mutakallimun enumerated by Maimonides as the basis of their doctrine of God, we shall select a few of the most important.[264]

1. The Theory of Atoms. The entire universe is made up of indivisible bodies having no magnitude. Their combination produces magnitude and corporeality. They are all alike. Genesis and dissolution means simply the combination or rather aggregation of atoms and their separation. These atoms are not eternal, as Epicurus believed them to be, but created.

2. This atomic theory they extend from magnitude to time. Time also according to them is composed of moments or atomic units of time. Neither magnitude, nor matter, nor time is continuous or infinitely divisible.