Of Unity, the fourth and last characteristic, we shall say but little; for we know in truth little or nothing of the law which governs it: indeed, all that we know but amounts to this,--that, wherever existing, it presents to the mind the Idea of a Whole,--which is itself a mystery. For what answer can we give to the question, What is a Whole? If we reply, That which has neither more nor less than it ought to have, we do not advance a step towards a definite notion; for the rule (if there be one) is yet undiscovered, by which to measure either the too much or the too little. Nevertheless, incomprehensible as it certainly is, it is what the mind will not dispense with in a work of Art; nay, it will not concede even a right to the name to any production where this is wanting. Nor is it a sound objection, that we also receive pleasure from many things which seem to us fragmentary; for instance, from actual views in Nature,--as we shall hope to show in another place. It is sufficient at present, that, in relation to Art, the law of the imagination demands a whole; in order to which not a single part must be felt to be wanting; all must be there, however imperfectly rendered; nay, such is the craving of this active faculty, that, be they but mere hints, it will often fill them out to the desired end; the only condition being, that the part hinted be founded in truth. It is well known to artists, that a sketch, consisting of little more than hints, will frequently produce the desired effect, and by the same means,--the hints being true so far as expressed, and without an hiatus. But let the artist attempt to finish his sketch, that is, to fill out the parts, and suppose him deficient in the necessary skill, the consequence must be, that the true hints, becoming transformed to elaborate falsehoods, will be all at variance, while the revolted imagination turns away with disgust. Nor is this a thing of rare occurrence: indeed, he is a most fortunate artist, who has never had to deplore a well-hinted whole thus reduced to fragments.

These are facts; from which we may learn, that with less than a whole, either already wrought, or so indicated that the excited imagination can of itself complete it, no genuine response will ever be given to any production of man. And we learn from it also this twofold truth; first, that the Idea of a Whole contains in itself a preëxisting law; and, secondly, that Art, the peculiar product of the Imagination, is one of its true and predetermined ends.

As to its practical application, it were fruitless to speculate. It applies itself, even as truth, both in action and reaction, verifying itself: and our minds submit, as if it had said, There is nothing wanting; so, in the converse, its dictum is absolute when it announces a deficiency.

To return to the objection, that we often receive pleasure from many things in Nature which seem to us fragmentary, we observe, that nothing in Nature can be fragmentary, except in the seeming, and then, too, to the understanding only,--to the feelings never; for a grain of sand, no less than a planet, being an essential part of that mighty whole which we call the universe, cannot be separated from the Idea of the world without a positive act of the reflective faculties, an act of volition; but until then even a grain of sand cannot cease to imply it. To the mere understanding, indeed, even the greatest extent of actual objects which the finite creature can possibly imagine must ever fall short of the vast works of the Creator. Yet we nevertheless can, and do, apprehend the existence of the universe. Now we would ask here, whether the influence of a real,--and the epithet here is not unimportant,--whether the influence of a real Whole is at no time felt without an act of consciousness, that is, without thinking of a whole. Is this impossible? Is it altogether out of experience? We have already shown (as we think) that no unmodified copy of actual objects, whether single or multifarious, ever satisfies the imagination,--which imperatively demands a something more, or at least different. And yet we often find that the very objects from which these copies are made do satisfy us. How and why is this? A question more easily put than answered. We may suggest, however, what appears to us a clew, that in abler hands may possibly lead to its solution; namely, the fact, that, among the innumerable emotions of a pleasurable kind derived from the actual, there is not one, perhaps, which is strictly confined to the objects before us, and which we do not, either directly or indirectly, refer to something beyond and not present. Now have we at all times a distinct consciousness of the things referred to? Are they not rather more often vague, and only indicated in some undefined feeling? Nay, is its source more intelligible where the feeling is more definite, when taking the form of a sense of harmony, as from something that diffuses, yet deepens, unbroken in its progress through endless variations, the melody as it were of the pleasurable object? Who has never felt, under certain circumstances, an expansion of the heart, an elevation of mind, nay, a striving of the whole being to pass its limited bounds, for which he could find no adequate solution in the objects around him,--the apparent cause? Or who can account for every mood that thralls him,--at times like one entranced in a dream by airs from Paradise,--at other times steeped in darkness, when the spirit of discord seems to marshal his every thought, one against another?

Whether it be that the Living Principle, which permeates all things throughout the physical world, cannot be touched in a single point without conducting to its centre, its source, and confluence, thus giving by a part, though obscurely and indefinitely, a sense of the whole,--we know not. But this we may venture to assert, and on no improbable ground,--that a ray of light is not more continuously linked in its luminous particles than our moral being with the whole moral universe. If this be so, may it not give us, in a faint shadowing at least, some intimation of the many real, though unknown relations, which everywhere surround and bear upon us? In the deeper emotions, we have, sometimes, what seems to us a fearful proof of it. But let us look at it negatively; and suppose a case where this chain is broken,--of a human being who is thus cut off from all possible sympathies, and shut up, as it were, in the hopeless solitude of his own mind. What is this horrible avulsion, this impenetrable self-imprisonment, but the appalling state of despair? And what if we should see it realized in some forsaken outcast, and hear his forlorn cry, "Alone! alone!" while to his living spirit that single word is all that is left him to fill the blank of space? In such a state, the very proudest autocrat would yearn for the sympathy of the veriest wretch.

It would seem, then, since this living cement which is diffused through nature, binding all things in one, so that no part can be contemplated that does not, of necessity, even though unconsciously to us, act on the mind with reference to the whole,--since this, as we find, cannot be transferred to any copy of the actual, it must needs follow, if we would imitate Nature in its true effects, that recourse must be had to another, though similar principle, which shall so pervade our production as to satisfy the mind with an efficient equivalent. Now, in order to this there are two conditions required: first, the personal modification, (already discussed) of every separate part,--which may be considered as its proper life; and, secondly, the uniting of the parts by such an interdependence that they shall appear to us as essential, one to another, and all to each. When this is done, the result is a whole. But how do we obtain this mutual dependence? We refer the questioner to the law of Harmony,--that mysterious power, which is only apprehended by its imperative effect.

But, be the above as it may, we know it to be a fact, that, whilst nothing in Nature ever affects us as fragmentary, no unmodified copy of her by man is ever felt by us as otherwise.

We have thus--and, we trust, on no fanciful ground--endeavoured to establish the real and distinctive character of Art. And, if our argument be admitted, it will be found to have brought us to the following conclusions:--first, that the true ground of all originality lies in the individualizing law, that is, in that modifying power, which causes the difference between man and man as to their mental impressions; secondly, that only in a true reproduction consists its evidence; thirdly, that in the involuntary response from other minds lies the truth of the evidence; fourthly, that in order to this response there must therefore exist some universal kindred principle, which is essential to the human mind, though widely differenced in the degree of its activity in different individuals; and finally, that this principle, which we have here denominated Human or Poetic Truth, being independent both of the will and of the reflective faculties, is in its nature imperative, to affirm or deny, in relation to every production pretending to Art, from the simple imitation of the actual to the probable, and from the probable to the possible;--in one word, that the several characteristics, Originality, Poetic Truth, Invention, each imply a something not inherent in the objects imitated, but which must emanate alone from the mind of the Artist.

And here it may be well to notice an apparent objection, that will probably occur to many, especially among painters. How, then, they may ask, if the principle in question be universal and imperative, do we account for the mistakes which even great Artists have sometimes made as to the realizing of their conceptions? We hope to show, that, so far from opposing, the very fact on which the objection is grounded will be found, on the contrary, to confirm our doctrine. Were such mistakes uniformly permanent, they might, perhaps, have a rational weight; but that this is not the case is clearly evident from the additional fact of the change in the Artist's judgment, which almost invariably follows any considerable interval of time. Nay, should a case occur where a similar mistake is never rectified,--which is hardly probable,--we might well consider it as one of those exceptions that prove the rule,--of which we have abundant examples in other relations, where a true principle is so feebly developed as to be virtually excluded from the sphere of consciousness, or, at least, where its imperfect activity is for all practical purposes a mere nullity. But, without supposing any mental weakness, the case may be resolved by the no less formidable obstacle of a too inveterate memory: and there have been such,--where a thought or an image once impressed is never erased. In Art it is certainly an advantage to be able sometimes to forget. Nor is this a new notion; for Horace, it seems, must have had the same, or he would hardly have recommended so long a time as nine years for the revision of a poem. That Titian also was not unaware of the advantage of forgetting is recorded by Boschini, who relates, that, during the progress of a work, he was in the habit of occasionally turning it to the wall, until it had somewhat faded from his memory, so that, on resuming his labor, he might see with fresh eyes; when (to use his expression) he would criticize the picture with as much severity as his worst enemy. If, instead of the picture on the canvas, Boschini had referred to that in his mind, as what Titian sought to forget, he would have been, as we think, more correct. This practice is not uncommon with Artists, though few, perhaps, are aware of its real object.

It has doubtless the appearance of a singular anomaly in the judgment, that it should not always be as correct in relation to our own works as to those of another. Yet nothing is more common than perfect truth in the one case, and complete delusion in the other. Our surprise, however, would be sensibly diminished, if we considered that the reasoning or reflective faculties have nothing to do with either case. It is the Principle of which we have been speaking, the life, or truth within, answering to the life, or rather its sign, before us, that here sits in judgment. Still the question remains unanswered; and again we are asked, Why is it that our own works do not always respond with equal veracity? Simply because we do not always see them,--that is, as they are,--but, looking as it were through them, see only their originals in the mind; the mind here acting, instead of being acted upon. And thus it is, that an Artist may suppose his conception realized, while that which gave life to it in his mind is outwardly wanting. But let time erase, as we know it often does, the mental image, and its embodied representative will then appear to its author as it is,--true or false. There is one case, however, where the effect cannot deceive; namely, where it comes upon us as from a foreign source; where our own seems no longer ours. This, indeed, is rare; and powerful must be the pictured Truth, that, as soon as embodied, shall thus displace its own original.