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 cannot easily be conceived, and which does not come within the scope of imagination. Of these two lines the one is straight, the other curved, as stated in the aforementioned book. It has consequently been proved that things which cannot be perceived or imagined, and which would be found impossible if tested solely by imagination, are nevertheless in real existence. The non-existence of things which are represented by imagination as possible has likewise been established by proof, e.g., the corporeality of God, and His existence as a force residing in a body. Imagination perceives nothing except bodies, or properties inherent in bodies.

It has thus been clearly shown that in man exists a certain faculty which is entirely distinct from imagination, and by which the necessary, the possible, and the impossible can be distinguished from each other. This inquiry is most useful. It is of the greatest profit to him who desires to guard himself against the errors of men guided by imagination I Do not think that the Mutakallemim ignore this altogether: to some extent they do take it into consideration; they know it, and call that which can be imagined without having reality--as, e.g., the corporeality of God--a phantom and a fancy; they state frequently that such phantoms are not real. It is for this reason that they advance the first nine propositions and establish on them the proof of the tenth, according to which all those imaginable things which they wish to admit as possible are really possible, because of the similarity of an atoms and the equality of all accidents as regards their accidentality, as we have explained.

Consider, O reader, and bear in mind that this requires deep research. For there are certain notions which some believe to be founded on reason, while others regard them as mere fictions. In such cases it would be necessary to find something that could show the difference between conceptions of the intellect and mere imaginary fancies. When the philosopher, in his way of expressing himself, contends, "Reality is my evidence; by its guidance I examine whether a thing is necessary, possible, or impossible," the religionist replies, "This is exactly the difference between us; that which actually exists, has, according to my view, been produced by the will of the Creator, not by necessity; just as it has been created with that special property, it might have been created with any other property, unless the impossibility which you postulate be proved by a logical demonstration."

About this admissibility (of imaginable things) I shall have to say more, and I shall return to it in various parts of this treatise; for it is not a subject which should be rejected in haste and on the spur of the moment.

ELEVENTH PROPOSITION.

"The existence of the infinite is in every respect impossible." The following is an explanation of this proposition. The impossibility of the existence of an infinite body has been clearly demonstrated; the same can be said of an infinite number of bodies, though each of them be finite, if these beings, infinite in number, exist at the same time; equally impossible is the existence of an infinite series of causes, namely, that a certain thing should be the cause of another thing, but itself the effect of another cause, which again is the result of another cause, and so on to infinity, or that things in an infinite series, either bodies or ideals, should be in actual existence, and in