The 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. For there is no relation or comparison whatever between corporeal and incorporeal beings, neither in the moment of action nor in that of inaction. It is only by homonymity that the term “action” is used in reference to the forms residing in bodies, and also in reference to absolutely spiritual beings. The circumstance that a purely spiritual being does not effect at one time that which it effects at another, does not necessitate a transition from potentiality to actuality; such a transition is necessary in the case of forces connected with bodies. It might, perhaps, be objected that our argument is, to some extent, a fallacy; since it is not due to anything contained in the Active Intellect itself, but to the absence of substances sufficiently prepared for its action, that at times it does not act; it does act always when substances sufficiently prepared are present, and, when the action does not continue, it is owing to the absence of substance sufficiently prepared, and not to any change in the Intellect. I answer that it is not our intention to state the reason why God created at one time and not at another; and, in referring to the Active Intellect as a parallel, we do not mean to assert that God acts at one time and not at another, in the same manner as the Active Intellect, an absolutely spiritual being, acts