The fact that the writer of Genesis represents light as existing three days before the creation of the sun, the source of light, has frequently been noticed. One learned commentator supposed that God had infused a certain "luminosity" through the air, which was not exactly the same as the light of the sun. But light is not a _thing_; it is a phenomenon caused by definite laws of astronomy and optics. Such explanations are but fanciful refuges of superstition. "God said let there be light and there was light," is not the language of science and history, but the language of poetry. As such it is sublime. We find a similar expression in the Vedas of the Hindoos: "He thought, I will create worlds, and they were there!" Both become ridiculous when presented to us as a scientific statement The physical astronomer knows how worlds are formed, as well as how their movements are determined; he knows also the causes of light; and he knows that none of these processes resembles the accounts given in the Creation Stories of the Hebrews and the Hindoos. Science knows nothing of six creative epochs, any more than of six creative days; and it is quite certain that the order of Creation given in Genesis differs widely from the revelations of Geology. For instance (and one instance in such a case is as good as a thousand), fish and fowl are said to have been created on the same day. Let us, for the sake of argument, assume that day means period. The conclusion still is that fish and fowl were created together. Starting from this conclusion, what should we expect to find in our geological researches? Why, the fossil remains of fish and of fowl in the same epochs. But we find nothing of the kind. Marine animals antedate the carboniferous period, during which all our coal deposits were laid, but no remains of fowl are found until a later period. Now the carboniferious period alone, according to Sir William Thompson, covers many millions of years; so that instead of fish and fowl being contemporaneous, we find them geologically separated by inconceivable spaces of time. Here again the Bible and Science fatally disagree.