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Rh the only member of its species, and does not depend on any cause whatever; this being has therefore nothing in common with other beings.

Fourth Argument. – This is likewise a well-known philosophical argument. We constantly see things passing from a state of potentiality to that of actuality, but in every such case there is for that transition of a thing an agent separate from it (Prop. XVIII). It is likewise clear that the agent has also passed from potentiality to actuality. It has at first been potential, because it could not be actual, owing to some obstacle contained in itself, or on account of the absence of a certain relation between itself and the object of its action: it became an actual agent as soon as that relation was present. Whichever cause be assumed, an agent is again necessary to remove the obstacle or to create the relation. The same can be argued respecting this last-mentioned agent that creates the relation or removes the obstacle. This series of causes cannot go on ad infinitum; we must at last arrive at a cause of the transition of an object from the state of potentiality to that of actuality, which is constant, and admits of no potentiality whatever. In the essence of this cause nothing exists potentially, for if its essence included any possibility of existence it would not exist at all (Prop. XXIII.); it cannot be corporeal, but it must be spiritual (Prop. XXIV.); and the immaterial being that includes no possibility whatever, but exists actually by its own essence, is God. Since He is incorporeal, as has been demonstrated, it follows that He is One (Prop. XVI).

Even if we were to admit the Eternity of the Universe, we could by any of these methods prove the existence of God; that He is One and incorporeal, and that He does not reside as a force in a corporeal object.

The following is likewise a correct method to prove the Incorporeality and the Unity of God: If there were two Gods, they would necessarily have one element in common by virtue of which they were Gods, and another element by which they were distinguished from each other and existed as two Gods; the distinguishing element would either be in both different from the property common to both – in that case both of them would consist of different elements, and neither of them would be the First Cause, or have absolutely independent existence; but their existence would depend on certain causes (Prop. XIX.) – or the distinguishing element would only in one of them be different from the element common to both: then that being could not have absolute independence.

Another proof of the Unity of God. – It has been demonstrated by proof that the whole existing world is one organic body, all parts of which are connected together; also, that the influences of the spheres above pervade the earthly substance and prepare it for its forms. Hence it is impossible to assume that one deity be engaged in forming one part, and another deity in forming another part of that organic body of which all parts are closely connected together. A duality could only be imagined in this way, either that at one time the one deity is active, the other at another time, or that both act simultaneously, nothing being done except by both together. The first alternative is certainly absurd for many reasons: if at the time the one deity be active the other could also be active, there is no reason why the one deity should then act and the other not; if, on the other hand, it be impossible for the one deity to act when the other is at work, there must be some