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DIADUMENUS. But leaving now the Gods, and beseeching them to give these Stoics common sense and a common understanding, let us look into their doctrines concerning the elements. It is against the common conceptions that one body should be the place of another, or that a body should penetrate through a body, neither of them containing any vacuity, but the full passing into the full, and that which has no vacuity—but is full and has no place by reason of its continuity—receiving the mixture. But these men, not thrusting one thing into one, nor yet two or three or ten together, but jumbling all the parts of the world, being cut piecemeal, into any one thing which they shall first light on, and saying that the very least which is perceived by sense will contain the greatest that shall come unto it, boldly frame a new doctrine, convicting themselves here, as in many other things, of taking for their suppositions things repugnant to common sense. And presently upon this they are forced to admit into their discourse many monstrous and strange positions, mixing whole bodies with whole; of which this also is one, that three are four. For this others put as an example of those things which cannot be conceived even in thought. But to the Stoics it is a matter of truth, that when one cup of wine is mixed with two of water, if it is not to be lost but the mixture is to be equalized, it must be extended through the whole and be confounded therewith, so as to make that which was one two by the equalization of the mixture. For the one remains, but is extended as much as two, and thus is equal to the double of itself. Now if it happens in the mixture with two to take the measure of two in the diffusion, this is together the measure both of three and four,—of three because one is mixed with two, and of four because, being mixed with two, it has an equal quantity with those with which it is mixed. Now this fine subtilty is a consequence of their putting bodies into a body, and so likewise is the unintelligibleness of the manner how one is contained in the other. For it is of necessity that, of bodies passing one into another by mixture, the one should not contain and the other be contained, nor the one receive and the other be received within; for this would not be a mixture, but a contiguity and touching of the superficies, the one entering in, and the other enclosing it without, and the rest of the parts remaining unmixed and pure, and so it would be merely many different things. But there being a necessity, according to their axiom of mixture, that the things which are mixed should be mingled one within the other, and that the same things should together be contained by being within, and by receiving contain the other, and that neither of them could possibly exist again as it was before, it comes to pass that both the subjects of the mixture mutually penetrate each other, and that there is not any part of either remaining separate, but that they are necessarily all filled with each other.
