Plato, however, for the sake of discipline, speaks of the world which is unbegotten, as if it was generated.” Shortly after this, Taurus says, “What, therefore, are the causes through which the world being unbegotten, is supposed to be generated?” Both these inquiries[33], indeed, deserve to be philosophically investigated. For one of them excites to piety, but the other is assumed for the sake of elucidation. For Plato, knowing that the multitude apprehend that alone to be a cause which has a precedency in time, and not conceiving it to be possible for anything otherwise to be a cause, and also inferring, that, from this opinion, they might be led to disbelieve in the existence of Providence; wishing likewise to inculcate this dogma, that the world is governed by Providence, he tacitly manifests it to those who are abundantly able to understand that the world is unbegotten according to time; but to those who are not able to understand this, he indicates that it is generated. He is also anxious that they may believe this, in order that at the same time they may be persuaded in the existence of Providence. But the second cause which induced Plato thus to write, is this,—that assertions are then more clear, when we meet with them as with things which actually take place. Thus geometricians compose diagrams as if they were generated, though they are not composites. And Euclid defines a circle, as being more simple, to be a plane figure, comprehended under one line, to which all lines falling from one point within the figure are equal to each other. But wishing to explain a sphere, he defines it, as if it was among the number of things generated, to be formed by the revolution of a semicircle about the diameter, until it returns to the same point from which it began to be moved. If, however, he had intended to explain the sphere which already existed, he would have defined it to be a solid figure, comprehended under one superficies, to which all right lines falling from one point within the figure, are equal to each other. But it was usual with Plato, for the sake of discipline, to unfold things which are without generation[34], as if they were generated. Thus, in the Republic, he introduces the city as being made, in order that in the formation of it, the generation of justice might become more manifest. When, however, Theophrastus says, that perhaps Plato speaks of the world as generated for the sake of elucidation, just as we consider geometrical diagrams to be generated, perhaps generation does not subsist similarly in diagrams. Aristotle also asserts the same thing; for he says, that in diagrams it is not proper in the beginning to suppose contraries, but this is to be admitted in the generation of the world; just as if some one should suppose motion and rest, order and disorder. Neither, therefore, do all things require invariable paradigms; but the examples show that it is not more obvious to assert that the world is generated,