7. Imagine a luminous point which serves as centre, and imagine around it a transparent sphere, so that the clearness of the luminous point shines in the whole body that surrounds it without the exterior receiving any light from elsewhere; you will surely have to acknowledge that this interior light, by remaining impassible, penetrates the whole surrounding mass, and that it embraces the whole sphere from the central point in which it is seen to shine. The truth is that the light did not emanate from the little body placed in the centre; for this little body did not glow inasmuch as it was a body, but inasmuch as it was a luminous body; that means, by virtue of an incorporeal power. Now in thought annihilate the mass of the little luminous body, and preserve its luminous power; could you still say that light is somewhere? Will it not be equally in the interior, and in the whole exterior sphere? You will no longer perceive where it was fixed before, and you will no longer say whence it comes, nor where it is; in this respect you will remain uncertain and astonished; you will see the light shine simultaneously in the interior and in the exterior sphere. An example of this is the solar light that shines in the air when you look at the body of the sun, at the same time that you perceive everywhere the same light without any division; that is demonstrated by objects that intercept the light; they reflect it nowhere else than in the direction from which it came; they do not shatter it into fragments. But if the sun were an incorporeal power, you could not, when it would radiate light, tell where the light began, nor from where it was sent; there would be but a single light, the same everywhere, having neither point of beginning, nor principle from which it proceeds. UNITY IS IN THE MANIFOLD BY A MANNER OF EXISTENCE.