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The philosophy of Hegel appeals to an historical criterion: the ideas of men have a succession in time as well as an order of thought. But the assumption that there is a correspondence between the succession of ideas in history and the natural order of philosophy is hardly true even of the beginnings of thought. And in later systems forms of thought are too numerous and complex to admit of our tracing in them a regular succession. They seem also to be in part reflections of the past, and it is difficult to separate in them what is original and what is borrowed. Doubtless they have a relation to one another—the transition from Descartes to Spinoza or from Locke to Berkeley is not a matter of chance, but it can hardly be described as an alternation of opposites or figured to the mind by the vibrations of a pendulum. Even in Aristotle and Plato, rightly understood, we cannot trace this law of action and reaction. They are both idealists, although to the one the idea is actual and immanent,—to the other only potential and transcendent, as Hegel himself has pointed out (Wallace's Hegel). The true meaning of Aristotle has been disguised from us by his own appeal to fact and the opinions of mankind in his more popular works, and by the use made of his writings in the Middle Ages. No book, except the Scriptures, has been so much read, and so little understood. The Pre-Socratic philosophies are simpler, and we may observe a progress in them; but is there any regular succession? The ideas of Being, change, number, seem to have sprung up contemporaneously in different parts of Greece and we have no difficulty in constructing them out of one another—we can see that the union of Being and Not-being gave birth to the idea of change or Becoming and that one might be another aspect of Being. Again, the Eleatics may be regarded as developing in one direction into the Megarian school, in the other into the Atomists, but there is no necessary connexion between them. Nor is there any indication that the deficiency which was felt in one school was supplemented or compensated by another. They were all efforts to supply the want which the Greeks began to feel at the beginning of the sixth century before Christ,—the want of abstract ideas. Nor must we forget the uncertainty of chronology;—if, as Aristotle says, there were Atomists before Leucippus, Eleatics before Xenophanes, and perhaps 'patrons of the flux' before Heracleitus, Hegel's order of thought in the history of philosophy would be as much disarranged as his order of religious thought by recent discoveries in the history of religion.

Hegel is fond of repeating that all philosophies still live and that the earlier are preserved in the later; they are refuted, and they are not refuted, by those who succeed them. Once they reigned supreme, now they are subordinated to a power or idea greater or more comprehensive than their own. The thoughts of Socrates and Plato and Aristotle have certainly sunk deep into the mind of the world, and have exercised an influence which will never pass away; but can we say that they have the same meaning in modern and ancient philosophy? Some of them, as for example the words 'Being,' 'essence,' 'matter,' 'form,' either have become obsolete, or are used in new senses, whereas 'individual,' 'cause,' 'motive,' have acquired an exaggerated importance. Is the manner in which the logical determinations of thought, or 'categories' as they may be termed, have been handed down to us, really different from that in which other words have come down to us? Have they not been equally subject to accident, and are they not often used by Hegel himself in senses which would have been quite unintelligible to their original inventors—as for example, when he speaks of the 'ground' of Leibnitz ('Everything has a sufficient ground') as identical with his own doctrine of the 'notion' (Wallace's Hegel), or the 'Being and Not-being' of Heracleitus as the same with his own 'Becoming'?

As the historical order of thought has been adapted to the logical, so we have reason for suspecting that the Hegelian logic has been in some degree adapted to the order of thought in history. There is unfortunately no criterion to which either of them can be subjected, and not much forcing was required to bring either into near relations with the other. We may fairly doubt whether the division of the first and second parts of logic in the Hegelian system has not really arisen from a desire to make them accord with the first and second stages of the early Greek philosophy. Is there any reason why the conception of measure in the first part, which is formed by the union of quality and quantity, should not have been equally placed in the second division of mediate or reflected ideas? The more we analyze them the less exact does the coincidence of philosophy and the history of philosophy appear. Many terms which were used absolutely in the beginning of philosophy, such as 'Being,' 'matter,' 'cause,' and the like, became relative in the subsequent history of thought. But Hegel employs some of them absolutely, some relatively, seemingly without any principle and without any regard to their original significance.

The divisions of the Hegelian logic bear a superficial resemblance to the divisions of the scholastic logic. The first part answers to the term, the second to the proposition, the third to the syllogism. These are the grades of thought under which we conceive the world, first, in the general terms of quality, quantity, measure; secondly, under the relative forms of 'ground' and existence, substance and accidents, and the like; thirdly in syllogistic forms of the individual mediated with the universal by the help of the particular. Of syllogisms there are various kinds,—qualitative, quantitative, inductive, mechanical, teleological,—which are developed out of one another. But is there any meaning in reintroducing the forms of the old logic? Who ever thinks of the world as a syllogism? What connexion is there between the proposition and our ideas of reciprocity, cause and effect, and similar relations? It is difficult enough to conceive all the powers of nature and mind gathered up in one. The difficulty is greatly increased when the new is confused with the old, and the common logic is the Procrustes' bed into which they are forced.

The Hegelian philosophy claims, as we have seen, to be based upon experience: it abrogates the distinction of a priori and a posteriori truth. It also acknowledges that many differences of kind are resolvable into differences of degree. It is familiar with the terms 'evolution,' 'development,' and the like. Yet it can hardly be said to have considered the forms of thought which are best adapted for the expression of facts. It has never applied the categories to experience; it has not defined the differences in our ideas of opposition, or development, or cause and effect, in the different sciences which make use of these terms. It rests on a knowledge which is not the result of exact or serious enquiry, but is floating in the air; the mind has been imperceptibly informed of some of the methods required in the sciences. Hegel boasts that the movement of dialectic is at once necessary and spontaneous: in reality it goes beyond experience and is unverified by it. Further, the Hegelian philosophy, while giving us the power of thinking a great deal more than we are able to fill up, seems to be wanting in some determinations of thought which we require. We cannot say that physical science, which at present occupies so large a share of popular attention, has been made easier or more intelligible by the distinctions of Hegel. Nor can we deny that he has sometimes interpreted physics by metaphysics, and confused his own philosophical fancies with the laws of nature. The very freedom of the movement is not without suspicion, seeming to imply a state of the human mind which has entirely lost sight of facts. Nor can the necessity which is attributed to it be very stringent, seeing that the successive categories or determinations of thought in different parts of his writings are arranged by the philosopher in different ways. What is termed necessary evolution seems to be only the order in which a succession of ideas presented themselves to the mind of Hegel at a particular time.