light, and that under no circumstances could it be necessary to take the darkness away from the light. It is certain, however, that Moses believed darkness to be a form of matter, because I find that in another place he speaks of a darkness that could be felt. They used to have on exhibition at Rome a bottle of the darkness that overspread Egypt.
You cannot divide light from darkness any more than you can divide heat from cold. Cold is an absence of heat, and darkness is an absence of light. I suppose that we have no conception of absolute cold. We know only degrees of heat. Twenty degrees below zero is just twenty degrees warmer than forty degrees below zero. Neither cold nor darkness are entities, and these words express simply either the absolute or partial absence of heat or light. I cannot conceive how light can be divided from darkness, but I can conceive how a barbarian several thousand years ago, writing upon a subject about which he knew nothing, could make a mistake. The creator of light could not have written in this way. If such a being exists, he must have known the nature of that "mode of motion" that paints the earth on every eye, and clothes in garments seven-hued this universe of worlds.
