The Hegelian dialectic may be also described as a movement from the simple to the complex. Beginning with the generalizations of sense, (1) passing through ideas of quality, quantity, measure, number, and the like, (2) ascending from presentations, that is pictorial forms of sense, to representations in which the picture vanishes and the essence is detached in thought from the outward form, (3) combining the I and the not-I, or the subject and object, the natural order of thought is at last found to include the leading ideas of the sciences and to arrange them in relation to one another. Abstractions grow together and again become concrete in a new and higher sense. They also admit of development from within their own spheres. Everywhere there is a movement of attraction and repulsion going on—an attraction or repulsion of ideas of which the physical phenomenon described under a similar name is a figure. Freedom and necessity, mind and matter, the continuous and the discrete, cause and effect, are perpetually being severed from one another in thought, only to be perpetually reunited. The finite and infinite, the absolute and relative are not really opposed; the finite and the negation of the finite are alike lost in a higher or positive infinity, and the absolute is the sum or correlation of all relatives. When this reconciliation of opposites is finally completed in all its stages, the mind may come back again and review the things of sense, the opinions of philosophers, the strife of theology and politics, without being disturbed by them. Whatever is, if not the very best—and what is the best, who can tell?—is, at any rate, historical and rational, suitable to its own age, unsuitable to any other. Nor can any efforts of speculative thinkers or of soldiers and statesmen materially quicken the 'process of the suns.'
Hegel was quite sensible how great would be the difficulty of presenting philosophy to mankind under the form of opposites. Most of us live in the one-sided truth which the understanding offers to us, and if occasionally we come across difficulties like the time-honoured controversy of necessity and free-will, or the Eleatic puzzle of Achilles and the tortoise, we relegate some of them to the sphere of mystery, others to the book of riddles, and go on our way rejoicing. Most men (like Aristotle) have been accustomed to regard a contradiction in terms as the end of strife; to be told that contradiction is the life and mainspring of the intellectual world is indeed a paradox to them. Every abstraction is at first the enemy of every other, yet they are linked together, each with all, in the chain of Being. The struggle for existence is not confined to the animals, but appears in the kingdom of thought. The divisions which arise in thought between the physical and moral and between the moral and intellectual, and the like, are deepened and widened by the formal logic which elevates the defects of the human faculties into Laws of Thought; they become a part of the mind which makes them and is also made up of them. Such distinctions become so familiar to us that we regard the thing signified by them as absolutely fixed and defined. These are some of the illusions from which Hegel delivers us by placing us above ourselves, by teaching us to analyze the growth of 'what we are pleased to call our minds,' by reverting to a time when our present distinctions of thought and language had no existence.
Of the great dislike and childish impatience of his system which would be aroused among his opponents, he was fully aware, and would often anticipate the jests which the rest of the world, 'in the superfluity of their wits,' were likely to make upon him. Men are annoyed at what puzzles them; they think what they cannot easily understand to be full of danger. Many a sceptic has stood, as he supposed, firmly rooted in the categories of the understanding which Hegel resolves into their original nothingness. For, like Plato, he 'leaves no stone unturned' in the intellectual world. Nor can we deny that he is unnecessarily difficult, or that his own mind, like that of all metaphysicians, was too much under the dominion of his system and unable to see beyond: or that the study of philosophy, if made a serious business (compare Republic), involves grave results to the mind and life of the student. For it may encumber him without enlightening his path; and it may weaken his natural faculties of thought and expression without increasing his philosophical power. The mind easily becomes entangled among abstractions, and loses hold of facts. The glass which is adapted to distant objects takes away the vision of what is near and present to us.
To Hegel, as to the ancient Greek thinkers, philosophy was a religion, a principle of life as well as of knowledge, like the idea of good in the Sixth Book of the Republic, a cause as well as an effect, the source of growth as well as of light. In forms of thought which by most of us are regarded as mere categories, he saw or thought that he saw a gradual revelation of the Divine Being. He would have been said by his opponents to have confused God with the history of philosophy, and to have been incapable of distinguishing ideas from facts. And certainly we can scarcely understand how a deep thinker like Hegel could have hoped to revive or supplant the old traditional faith by an unintelligible abstraction: or how he could have imagined that philosophy consisted only or chiefly in the categories of logic. For abstractions, though combined by him in the notion, seem to be never really concrete; they are a metaphysical anatomy, not a living and thinking substance. Though we are reminded by him again and again that we are gathering up the world in ideas, we feel after all that we have not really spanned the gulf which separates phainomena from onta.
Having in view some of these difficulties, he seeks—and we may follow his example—to make the understanding of his system easier (a) by illustrations, and (b) by pointing out the coincidence of the speculative idea and the historical order of thought.
(a) If we ask how opposites can coexist, we are told that many different qualities inhere in a flower or a tree or in any other concrete object, and that any conception of space or matter or time involves the two contradictory attributes of divisibility and continuousness. We may ponder over the thought of number, reminding ourselves that every unit both implies and denies the existence of every other, and that the one is many—a sum of fractions, and the many one—a sum of units. We may be reminded that in nature there is a centripetal as well as a centrifugal force, a regulator as well as a spring, a law of attraction as well as of repulsion. The way to the West is the way also to the East; the north pole of the magnet cannot be divided from the south pole; two minus signs make a plus in Arithmetic and Algebra. Again, we may liken the successive layers of thought to the deposits of geological strata which were once fluid and are now solid, which were at one time uppermost in the series and are now hidden in the earth; or to the successive rinds or barks of trees which year by year pass inward; or to the ripple of water which appears and reappears in an ever-widening circle. Or our attention may be drawn to ideas which the moment we analyze them involve a contradiction, such as 'beginning' or 'becoming,' or to the opposite poles, as they are sometimes termed, of necessity and freedom, of idea and fact. We may be told to observe that every negative is a positive, that differences of kind are resolvable into differences of degree, and that differences of degree may be heightened into differences of kind. We may remember the common remark that there is much to be said on both sides of a question. We may be recommended to look within and to explain how opposite ideas can coexist in our own minds; and we may be told to imagine the minds of all mankind as one mind in which the true ideas of all ages and countries inhere. In our conception of God in his relation to man or of any union of the divine and human nature, a contradiction appears to be unavoidable. Is not the reconciliation of mind and body a necessity, not only of speculation but of practical life? Reflections such as these will furnish the best preparation and give the right attitude of mind for understanding the Hegelian philosophy.
(b) Hegel's treatment of the early Greek thinkers affords the readiest illustration of his meaning in conceiving all philosophy under the form of opposites. The first abstraction is to him the beginning of thought. Hitherto there had only existed a tumultuous chaos of mythological fancy, but when Thales said 'All is water' a new era began to dawn upon the world. Man was seeking to grasp the universe under a single form which was at first simply a material element, the most equable and colourless and universal which could be found. But soon the human mind became dissatisfied with the emblem, and after ringing the changes on one element after another, demanded a more abstract and perfect conception, such as one or Being, which was absolutely at rest. But the positive had its negative, the conception of Being involved Not-being, the conception of one, many, the conception of a whole, parts. Then the pendulum swung to the other side, from rest to motion, from Xenophanes to Heracleitus. The opposition of Being and Not-being projected into space became the atoms and void of Leucippus and Democritus. Until the Atomists, the abstraction of the individual did not exist; in the philosophy of Anaxagoras the idea of mind, whether human or divine, was beginning to be realized. The pendulum gave another swing, from the individual to the universal, from the object to the subject. The Sophist first uttered the word 'Man is the measure of all things,' which Socrates presented in a new form as the study of ethics. Once more we return from mind to the object of mind, which is knowledge, and out of knowledge the various degrees or kinds of knowledge more or less abstract were gradually developed. The threefold division of logic, physic, and ethics, foreshadowed in Plato, was finally established by Aristotle and the Stoics. Thus, according to Hegel, in the course of about two centuries by a process of antagonism and negation the leading thoughts of philosophy were evolved.
There is nothing like this progress of opposites in Plato, who in the Symposium denies the possibility of reconciliation until the opposition has passed away. In his own words, there is an absurdity in supposing that 'harmony is discord; for in reality harmony consists of notes of a higher and lower pitch which disagreed once, but are now reconciled by the art of music' (Symp.). He does indeed describe objects of sense as regarded by us sometimes from one point of view and sometimes from another. As he says at the end of the Fifth Book of the Republic, 'There is nothing light which is not heavy, or great which is not small.' And he extends this relativity to the conceptions of just and good, as well as to great and small. In like manner he acknowledges that the same number may be more or less in relation to other numbers without any increase or diminution (Theat.). But the perplexity only arises out of the confusion of the human faculties; the art of measuring shows us what is truly great and truly small. Though the just and good in particular instances may vary, the IDEA of good is eternal and unchangeable. And the IDEA of good is the source of knowledge and also of Being, in which all the stages of sense and knowledge are gathered up and from being hypotheses become realities.
Leaving the comparison with Plato we may now consider the value of this invention of Hegel. There can be no question of the importance of showing that two contraries or contradictories may in certain cases be both true. The silliness of the so-called laws of thought ('All A = A,' or, in the negative form, 'Nothing can at the same time be both A, and not A') has been well exposed by Hegel himself (Wallace's Hegel), who remarks that 'the form of the maxim is virtually self-contradictory, for a proposition implies a distinction between subject and predicate, whereas the maxim of identity, as it is called, A = A, does not fulfil what its form requires. Nor does any mind ever think or form conceptions in accordance with this law, nor does any existence conform to it.' Wisdom of this sort is well parodied in Shakespeare (Twelfth Night, 'Clown: For as the old hermit of Prague, that never saw pen and ink, very wittily said to a niece of King Gorboduc, "That that is is"...for what is "that" but "that," and "is" but "is"?'). Unless we are willing to admit that two contradictories may be true, many questions which lie at the threshold of mathematics and of morals will be insoluble puzzles to us.
The influence of opposites is felt in practical life. The understanding sees one side of a question only—the common sense of mankind joins one of two parties in politics, in religion, in philosophy. Yet, as everybody knows, truth is not wholly the possession of either. But the characters of men are one-sided and accept this or that aspect of the truth. The understanding is strong in a single abstract principle and with this lever moves mankind. Few attain to a balance of principles or recognize truly how in all human things there is a thesis and antithesis, a law of action and of reaction. In politics we require order as well as liberty, and have to consider the proportions in which under given circumstances they may be safely combined. In religion there is a tendency to lose sight of morality, to separate goodness from the love of truth, to worship God without attempting to know him. In philosophy again there are two opposite principles, of immediate experience and of those general or a priori truths which are supposed to transcend experience. But the common sense or common opinion of mankind is incapable of apprehending these opposite sides or views—men are determined by their natural bent to one or other of them; they go straight on for a time in a single line, and may be many things by turns but not at once.