But it will be said, that the flower when it is wilted and withered here, may be transplanted to fairer regions; that the soul may take on new organs, when it has abandoned its earthly habitation, and in a series of transformations of which, it is true, we can form no definite conception, may enter afresh upon its struggles for worthiness in other spheres. This is, indeed, the loftiest expression which the hope of immortality has found. Unlike the arguments previously considered, it is unalloyed by any selfish motive, is founded upon a really exalted sentiment, and it is Love and Virtue themselves that here take up the strain, and sing us their animating song of ceaseless progress toward the good. The argument in this shape, involves the further question whether the existence of an independent and indestructible soul is assured, and upon this point the whole problem of immortality finally hinges. The question whether what we are accustomed to call the soul is a distinct and indivisible entity, or merely the result of material processes, has divided mankind for more than two thousand years, and some of the ablest thinkers have ranged themselves on either side. As early as the fifth century B. C. the philosopher Democritus propounded materialistic doctrines among the Greeks. According to him, the soul is a combination of smooth, round, polished and moving atoms, and to the motions of these atoms the phenomena of life are to be ascribed. Among the Romans, Lucretius advanced similar views. He took particular pains to combat the "vulgar fear of death," protesting that the prospect of dissolution would lose its terrors, did we not foolishly imagine ourselves conscious of being dead, forgetting that death implies the entire cessation of consciousness. The followers of materialistic opinions among the ancients, were not a few. But during the ascendancy of the Christian Church, these opinions retired into the background, until in the seventeenth and eighteenth centuries, they were revived by such men as Gassendi and La Mettrie, and others. In modern times they have been widely spread. The list of names on the opposite side is headed by Socrates, Plato, Aristotle, and embraces the great majority of writers and public teachers, down to the present day. It may appear strange that when the belief in immortality had once become current, men should have been tempted to forego its pleasing prospects, and even, with a certain vehemence, to urge their sceptical views upon others. Let us consider for a moment, what it was that induced the materialists to assume their position. The observed correspondence between mental and physical phenomena doubtless led them in the first instance to adopt their peculiar views.