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 it came into existence may be compared with that of animals when their existence begins: the heart evidently precedes the testicles, the veins are in existence before the bones: although, when the animal is fully developed, none of the parts is missing which is essential to its existence. This remark is not superfluous, if the Scriptural account of the Creation be taken literally; in reality, it cannot be taken literally, as will be shown when we shall treat of this subject. (See chapter 30.)

The principle laid down in the foregoing must be well understood; it is a high rampart erected round the Law, and able to resist all missiles directed against it. Aristotle, or rather his followers, may perhaps ask us how we know that the Universe has been created: and that other forces than those it has at present were acting in its Creation, since we hold that the properties of the Universe, as it exists at present, prove nothing as regards its creation? We reply, there is no necessity for this according to our plan; for we do not desire to prove the Creation, but only its possibility: and this possibility is not refuted by arguments based on the nature of the present Universe, which we do not dispute. When we have established the admissibility of our theory, we shall then show its superiority. In attempting to prove the inadmissibility of Creatio ex nihilo, the Aristotelians can therefore not derive any support from the nature of the Universe: they must resort to the notion our mind has formed of God. Their proofs include the three methods which I have mentioned above, and which are based on the notion conceived of God. In the next chapter I will expose the weak points of these arguments, and show that they really prove nothing.

CHAPTER XVIII
THIS first method employed by the philosophers is this: they assume that a transition from potentiality to actuality would take place in the Deity itself, if He produced a thing only at a certain fixed time. The refutation of this argument is very easy. The argument applies only to bodies composed of substance-the element that possesses the possibility [of change] -- and form; for when such a body does not act for some time, and then acts by virtue of its form, it must undoubtedly have possessed something in potentia that hath now become actual, and the transition can only have been effected by some external agent. As far as corporeal bodies are concerned, this has been fully proved. But that which is incorporeal and without substance does not include anything merely possible; everything it contains is always in existence. The above argument does not apply to it, and it is not impossible that such a being acts at one time and does not act at another. This does not imply a change in the incorporeal being itself nor a transition from potentiality to actuality. The Active Intellect may be taken as an illustration. According to Aristotle and his school, the Active Intellect, an incorporeal being, acts at one time and does not act at another, as has been shown by Abu-nasr in his treatise on the Intellect. He says there quite correctly as follows:" It is an evident fact that the Active Intellect does not act continually, but only at times." And yet he does not say that the Active Intellect is changeable, or passes from a state of potentiality to that of actuality, although it produces at one time something which it has not produced before.