If we ask how the cosmos came into existence we shall find that ultimately we can only attribute it to the Self-Contemplation of Spirit. Let us start with the facts now known to modern physical science. All material things, including our own bodies, are composed of combinations of different chemical elements such as carbon, oxygen, nitrogen, &c. Chemistry recognizes in all about seventy of these elements each with its peculiar affinities; but the more advanced physical science of the present day finds that they are all composed of one and the same ultimate substance to which the name of Ether has been given, and that the difference between an atom of iron and an atom of oxygen results only from the difference in the number of etheric particles of which each is composed and the rate of their motion within the sphere of the atom, thus curiously coming back to the dictum of Pythagoras that the universe has its origin in Number and Motion. We may therefore say that our entire solar system together with every sort of material substance which it contains is made up of nothing but this one primary substance in various degrees of condensation. Now the next step is to realize that this ether is everywhere. This is shown by the undulatory theory of light. Light is not a substance but is the effect produced on the eye by the impinging of the ripples of the ether upon the retina. These waves are excessively minute, ranging in length from 1-39,000th of an inch at the red end of the spectrum to 1-57,000th at the violet end. Next remember that these waves are not composed of advancing particles of the medium but pass onwards by the push which each particle in the line of motion gives to the particle next to it, and then you will see that if there were a break of one fifty-thousandth part of an inch in the connecting ether between our eye and any source of light we could not receive light from that source, for there would be nothing to continue the wave-motion across the gap. Consequently as soon as we see light from any source however distant, we know that there must be a continuous body of ether between us and it. Now astronomy shows us that we receive light from heavenly bodies so distant that, though it travels with the incredible speed of 186,000 miles per second, it takes more than two thousand years to reach us from some of them; and as such stars are in all quarters of the heavens we can only come to the conclusion that the primary substance or ether must be universally present.