"The highest and most consoling beliefs of the human mind," he says, "are to a great extent bound up with the Christian religion. If we ask ourselves frankly how much, apart from this religion, would remain of faith in a God, and in a future state of existence, the answer must be, very little. Science traces everything back to primeval atoms and germs, and there it leaves us. How came these atoms and energies there, from which this wonderful universe of worlds has been evolved by inevitable laws? What are they in their essence, and what do they mean? The only answer is, It is unknowable. It is "behind the veil," and may be anything. Spirit may be matter, matter may be spirit. We have no faculties by which we can even form a conception, from any discoveries of the telescope or microscope, from any experiments in the laboratory, or from any facts susceptible of real human knowledge, of what may be the first cause underlying all these phenomena. "In like manner we can already, to a great extent, and probably in a short time shall be able to the fullest extent to trace the whole development of life from the lowest to the highest; from protoplasm, through monera, infusoria, mollusca, vertebrata, fish, reptile and mammal, up to man; and the individual man from the microscopic egg, through the various stages of its evolution up to birth, childhood, maturity, decline, and death. We can trace also the development of the human race through enormous periods of time, from the modest beginnings up to its present level of civilisation, and show how arts, languages, morals, and religions have been evolved gradually by human laws from primitive elements, many of which are common in their ultimate form to man and the animal creation. "But here also science stops. Science can give no account of how these germs and nucleated cells, endowed with these marvellous capacities for evolution, came into existence, or got their intrinsic powers. Nor can science enable us to form the remotest conception of what will become of life, consciousness, and conscience, when the material conditions with which they are always associated, while within human experience, have been dissolved by death, and no longer exist. We know as little, in the way of accurate and demonstrable knowledge, of our condition after death as we do of our existence--if we had an existence--before birth."[691]