A world where ordering reason was not only raised to supreme power, but also jealously secluded from all communion with lower forms of existence, meant to popular imagination a world from which divinity had been withdrawn. The astronomical teaching of Anaxagoras was well calculated to increase a not unfounded alarm. Underlying the local tribal mythology of Athens and of Greece generally, was an older, deeper Nature-worship, chiefly directed towards those heavenly luminaries which shone so graciously on all men, and to which all men yielded, or were supposed to yield, grateful homage in return. _Securus judicat orbis terrarum._ Every Athenian citizen from Nicias to Strepsiades would feel his own belief strengthened by such a universal concurrence of authority. Two generations later, Plato held fast to the same conviction, severely denouncing its impugners, whom he would, if possible, have silenced with the heaviest penalties. To Aristotle, also, the heavenly bodies were something far more precious and perfect than anything in our sublunary sphere, something to be spoken of only in language of enthusiastic and passionate love. At a far later period Marcus Aurelius could refer to them as visible gods;[32] and just before the final extinction of Paganism highly-educated men still offered up their orisons in silence and secresy to the moon.[33] Judge, then, with what horror an orthodox public received Anaxagoras’s announcement that the moon shone only by reflected light, that she was an earthy body, and that her surface was intersected with mountains and ravines, besides being partially built over. The bright Selênê, the Queen of Heaven, the most interesting and sympathetic of goddesses, whose phases so vividly recalled the course of human life, who was firmly believed to bring fine weather at her return and to take it away at her departure, was degraded into a cold, dark, senseless clod.[34] Democritus observed that all this had been known a long time in the Eastern countries where he had travelled.[C] Possibly; but fathers of families could not have been more disturbed if it had been a brand-new discovery. The sun, too, they were told, was a red-hot stone larger than Peloponnesus—a somewhat unwieldy size even for a Homeric god. Socrates, little as he cared about physical investigations generally, took this theory very seriously to heart, and attempted to show by a series of distinctions that sun-heat and fire-heat were essentially different from each other. A duller people than the Athenians would probably have shown far less suspicion of scientific innovations. Men who were accustomed to anticipate the arguments of an orator before they were half out of his mouth, with whom the extraction of reluctant admissions by cross-examination was habitually used as a weapon of attack and defence in the public law courts and practised as a game in private circles—who were perpetually on their guard against insidious