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38 be spoken of with reference to two points—as applicable, most especially, to the composition of particles in masses which have motion and proportion, whenever they may so coalesce as not to admit of any which are homogeneous, and then as applicable to the proportion of the commingled particles, yet in neither sense can it be reasonable to regard Vital Principle as harmony, nor can the Vital Principle be the composition of the parts of the body: for the composition of the parts (and many and various are the compositions of the parts) is quite open to examination—but of what can we suppose that the mind, or the sentient, or the appetitive faculty is a composition? or how is any one of them to be composed? It is equally absurd to think that the Vital Principle can be the proportion of the mixture, since the mixture of the elements which forms flesh is differently proportioned from that which forms bone. It will happen, too, from this theory, that there are many Vital Principles, and many in every body, if all bodies are from the elements in combination, and if the proportion of the combination is harmony and Vital Principle. We might inquire too of Empedocles, who maintains that each of those bodies exists in a certain proportion, whether Vital Principle is the proportion? or whether rather is it present in the members, as something different from proportion? Is affinity, besides, the cause of a fortuitous or a definite combination of