GENERA OF THE PHYSICAL ARE DIFFERENT FROM THOSE OF THE INTELLIGIBLE.
1. We have thus declared our views about (intelligible) Being, and shown how they agree with the doctrines of Plato. Now we have to study the “other nature” (the Being of the sense-world); and we shall have to consider whether it be proper to establish here the same genera as for the intelligible world, or to posit a greater number, by adding some to those already recognized; or whether the genera differ in each being entirely, or only partially, some remaining identical, while others differ. If any of them be identical in both beings, that can be understood only by analogy; that is what will become evident when each of these beings are fully understood.
THE WORLD MUST BE STUDIED, JUST AS ONE WOULD ANALYZE THE VOICE.
This is by what we must begin. Having to speak of sense-objects, and knowing that all of them are contained in this world here below, we must first scrutinize this world, establish within it divisions according to the nature of the (beings) which compose it, and then distribute them into genera, just as we would do if we had to analyze the voice whose nature is infinite (by the diversity of sounds it produces), reducing it to a definite number of kinds. Observing the elements common to many sounds, we would reduce them to one unity, then, to a superior unity, further to a supreme unity, in which these sounds appear as a small number of classes. Then, the elements common to these individuals would be called “species,” and that common to various species would be called a genus. As to the voice, it is easy enough to discover each species, to reduce all the species to unity, and to predicate of all of them (as highest genus or category) the general element, the voice. But an analysis as summary as this is impossible with the (more complicated universe). In the sense-world we will have to recognize several genera, which will differ from those of the intelligible world, since the sense-world itself differs from the intelligible world so much that it is not its counterpart, but only its image, whose only element common (to its model) is the name.
WE MUST FIRST DISSECT AWAY THE SOUL FROM THE BODY, TO EXAMINE IT.
As here below in the “mixture” (or blend, the soul), and the composition (the body) (which form our nature) there are two parts, soul and body, the totality of which forms the living organism; as the nature of the soul belongs to the intelligible world, and consequently does not belong to the same order of things as the sense-world, we shall, however difficult it may be, have to separate the soul from the sense-objects which we are here alone to consider. (We shall illustrate this by a parable). He who would wish to classify the inhabitants of a town according to their dignities and professions, would have to leave aside the foreign residents. As to the passions which arise from the union of the soul with the body, or, that the soul experiences because of the body, we shall later examine how they should be classified.6 This however must follow our study of the sense-objects.