Xenophanes does not seem to have been ever molested on account of his religious opinions. He complains bitterly enough that people preferred fiction to philosophy, that uneducated athletes engrossed far too much popular admiration, that he, Xenophanes, was not sufficiently appreciated;B but of theological intolerance, so far as our information goes, he says not one single word. It will easily be conceived that the rapid progress of Greek speculation was singularly favoured by such unbounded freedom of thought and speech. The views just set forth have often been regarded as a step towards spiritualistic monotheism, and so, considered in the light of subsequent developments, they unquestionably were. Still, looking at the matter from another aspect, we may say that Xenophanes, when he shattered the idols of popular religion, was returning to the past rather than anticipating the future; feeling his way back to the deeper, more primordial faith of the old Aryan race, or even of that still older stock whence Aryan and Turanian alike diverged. He turns from the brilliant, passionate, fickle Dyaus, to Zên, or Ten, the ever-present, all-seeing, all-embracing, immovable vault of heaven. Aristotle, with a sympathetic insight unfortunately too rare in his criticisms on earlier systems, observes that Xenophanes did not make it clear whether the absolute unity he taught was material or ideal, but simply looked up at the whole heaven and declared that the One was God.15 Aristotle was himself the real creator of philosophic monotheism, just because the idea of living, self-conscious personality had a greater value, a profounder meaning for him than for any other thinker of antiquity, one may almost say than for any other thinker whatever. It is, therefore, a noteworthy circumstance that, while warmly acknowledging the anticipations of Anaxagoras, he nowhere speaks of Xenophanes as a predecessor in the same line of enquiry. The latter might be called a pantheist were it not that pantheism belongs to a much later stage of speculation, one, in fact, not reached by the Greek mind at any period of its development. His leading conception was obscured by a confusion of mythological with purely physical ideas, and could only bear full fruit when the religious element had been entirely eliminated from its composition. This elimination was accomplished by a far greater thinker, one who combined poetic inspiration with philosophic depth; who was penetrating enough to discern the logical consequences involved in a fundamental principle of thought, and bold enough to push them to their legitimate conclusions without caring for the shock to sense and common opinion that his merciless dialectic might inflict.
Parmenides, of Elea, flourished towards the beginning of the fifth century B.C. We know very little about his personal history. According to Plato, he visited Athens late in life, and there made the acquaintance of Socrates, at that time a very young man. But an unsupported statement of Plato’s must always be received with extreme caution; and this particular story is probably not less fictitious than the dialogue which it serves to introduce. Parmenides embodied his theory of the world in a poem, the most important passages of which have been preserved. They show that, while continuing the physical studies of his predecessors, he proceeded on an entirely different method. Their object was to deduce every variety of natural phenomena from a fundamental unity of substance. He declared that all variety and change were a delusion, and that nothing existed but one indivisible, unalterable, absolute reality; just as Descartes’ antithesis of thought and extension disappeared in the infinite substance of Spinoza, or as the Kantian dualism of object and subject was eliminated in Hegel’s absolute idealism. Again, Parmenides does not dogmatise to the same extent as his predecessors; he attempts to demonstrate his theory by the inevitable necessities of being and thought. Existence, he tells us over and over again, is, and non-existence is not, cannot even be imagined or thought of as existing, for thought is the same as being. This is not an anticipation of Hegel’s identification of being with thought; it only amounts to the very innocent proposition that a thought is something and about something—enters, therefore, into the general undiscriminated mass of being. He next proceeds to prove that what is can neither come into being nor pass out of it again. It cannot come out of the non-existent, for that is inconceivable; nor out of the existent, for nothing exists but being itself; and the same argument proves that it cannot cease to exist. Here we find the indestructibility of matter, a truth which Anaximander had not yet grasped, virtually affirmed for the first time in history. We find also that our philosopher is carried away by the enthusiasm of a new discovery, and covers more ground than he can defend in maintaining the permanence of all existence whatever. The reason is that to him, as to every other thinker of the pre-Socratic period, all existence was material, or, rather, all reality was confounded under one vague conception, of which visible resisting extension supplied the most familiar type. To proceed: Being cannot be divided from being, nor is it capable of condensation or expansion (as the Ionians had taught); there is nothing by which it can be separated or held apart; nor is it ever more or less existent, but all is full of being. Parmenides goes on in his grand style:—
‘Therefore the whole extends continuously,
Being by Being set; immovable,
Subject to the constraint of mighty laws;
Both increate and indestructible,
Since birth and death have wandered far away
By true conviction into exile driven;
The same, in self-same place, and by itself
Abiding, doth abide most firmly fixed,
And bounded round by strong Necessity.
Wherefore a holy law forbids that Being
Should be without an end, else want were there,
And want of that would be a want of all.’16
Thus does the everlasting Greek love of order, definition, limitation, reassert its supremacy over the intelligence of this noble thinker, just as his almost mystical enthusiasm has reached its highest pitch of exaltation, giving him back a world which thought can measure, circumscribe, and control.
Being, then, is finite in extent, and, as a consequence of its absolute homogeneity, spherical in form. There is good reason for believing that the earth’s true figure was first discovered in the fifth century B.C., but whether it was suggested by the à priori theories of Parmenides, or was generalised by him into a law of the whole universe, or whether there was more than an accidental connexion between the two hypotheses, we cannot tell. Aristotle, at any rate, was probably as much indebted to the Eleatic system as to contemporary astronomy for his theory of a finite spherical universe. It will easily be observed that the distinction between space and matter, so obvious to us, and even to Greek thinkers of a later date, had not yet dawned upon Parmenides. As applied to the former conception, most of his affirmations are perfectly correct, but his belief in the finiteness of Being can only be justified on the supposition that Being is identified with matter. For it must be clearly understood (and Zeller has the great merit of having proved this fact by incontrovertible arguments)17 that the Eleatic Being was not a transcendental conception, nor an abstract unity, as Aristotle erroneously supposed, nor a Kantian noumenon, nor a spiritual essence of any kind, but a phenomenal reality of the most concrete description. We can only not call Parmenides a materialist, because materialism implies a negation of spiritualism, which in his time had not yet come into existence. He tells us plainly that a man’s thoughts result from the conformation of his body, and are determined by the preponderating element in its composition. Not much, however, can be made of this rudimentary essay in psychology, connected as it seems to be with an appendix to the teaching of our philosopher, in which he accepts the popular dualism, although still convinced of its falsity, and uses it, under protest, as an explanation of that very genesis which he had rejected as impossible.
As might be expected, the Parmenidean paradoxes provoked a considerable amount of contradiction and ridicule. The Reids and Beatties of that time drew sundry absurd consequences from the