Prof. Bain (Practical Essays, p. 273), citing Grote's remark on the "cautious prose compositions of Aristotle," comments thus: "That is to say, the execution of Sokrates was always before his eyes; he had to pare his expressions so as not to give offence to Athenian orthodoxy. We can never know the full bearings of such a disturbing force. The editors of Aristotle complain of the corruption of his text: a far worse corruption lies behind. In Greece Sokrates alone had the courage of his opinions. While his views as to a future life, for example, are plain and frank, the real opinion of Aristotle on the question is an insoluble problem." (See, however, the passage in the Metaphysics cited below.) The opinion of Grote and Bain as to Aristotle's caution is fully coincided in by Lange, who writes (Gesch. des Mater. i, 63): "More conservative than Plato and Sokrates, Aristotle everywhere seeks to attach himself as closely as possible to tradition, to popular notions, to the ideas embodied in common speech, and his ethical postulates diverge as little as may be from the customary morals and laws of Greek States. He has therefore been at all times the favourite philosopher of conservative schools and movements." It is clear, nevertheless, if we can be sure of his writings, that he was a monotheist, but a monotheist with no practical religion. "Excluding such a thing as divine interference with Nature, his theology, of course, excludes the possibility of revelation, inspiration, miracles, and grace." [686] In a passage in the Metaphysics, after elaborating his monistic conception of Nature, he dismisses in one or two terse sentences the whole current religion as a mass of myth framed to persuade the multitude, in the interest of law and order. [687] His influence must thus have been to some extent, at least, favourable to rational science, though unhappily his own science is too often a blundering reaction against the surmises of earlier thinkers with a greater gift of intuition than he, who was rather a methodizer than a discoverer. [688] What was worst in his thinking was its tendency to apriorism, which made it in a later age so adaptable to the purposes of the Roman Catholic Church. Thus his doctrines of the absolute levity of fire and of nature's abhorrence of a vacuum set up a hypnotizing verbalism, and his dictum that the earth is the centre of the universe was fatally helpful to Christian obscurantism. For the rest, while guiltless of Plato's fanaticism, he had no scheme of reform whatever, and was as far as any other Greek from the thought of raising the mass by instruction. His own science, indeed, was not progressive, save as regards his collation of facts in biology; and his political ideals were rather reactionary; his clear perception of the nature of the population problem leaving him in the earlier attitude of Malthus, and his lack of sympathetic