I do not assert that inferior writers abstain from the familiar and trivial. On the contrary, as imitators, they imitate everything which great writers have shown to be sources of interest. But their bias is towards great subjects. They make no new ventures in the direction of personal experience. They are silent on all that they have really seen for themselves. Unable to see the deep significance of what is common, they spontaneously turn towards the uncommon.

There is, at the present day, a fashion in Literature, and in Art generally, which is very deporable, and which may, on a superficial glance, appear at variance with what has just been said. The fashion is that of coat-and-waistcoat realism, a creeping timidity of invention, moving almost exclusively amid scenes of drawing-room existence, with all the reticences and pettinesses of drawing-room conventions. Artists have become photographers, and have turned the camera upon the vulgarities of life, instead of representing the more impassioned movements of life. The majority of books and pictures are addressed to our lower faculties; they make no effort as they have no power to stir our deeper emotions by the contagion of great ideas. Little that makes life noble and solemn is reflected in the Art of our day; to amuse a languid audience seems its highest aim. Seeing this, some of my readers may ask whether the artists have not been faithful to the law I have expounded, and chosen to paint the small things they have seen, rather than the great things they have not seen? The answer is simple. For the most part the artists have not painted what they have seen, but have been false and conventional in their pretended realism. And whenever they have painted truly, they have painted successfully. The authenticity of their work has given it all the value which in the nature of things such work could have. Titian's portrait of "The Young Man with a Glove" is a great work of art, though not of great art. It is infinitely higher than a portrait of Cromwell, by a painter unable to see into the great soul of Cromwell, and to make us see it; but it is infinitely lower than Titian's "Tribute Money," "Peter the Martyr," or the "Assumption." Tennyson's "Northern Farmer" is incomparably greater as a poem than Mr. Bailey's ambitious "Festus;" but the "Northern Farmer" is far below "Ulysses" or "Guinevere," because moving on a lower level, and recording the facts of a lower life.

Insight is the first condition of Art. Yet many a man who has never been beyond his village will be silent about that which he knows well, and will fancy himself called upon to speak of the tropics or the Andes—-on the reports of others. Never having seen a greater man than the parson and the squire and not having seen into them—he selects Cromwell and Plato, Raphael and Napoleon, as his models, in the vain belief that these impressive personalities will make his work impressive. Of course I am speaking figuratively. By "never having been beyond his village," I understand a mental no less than topographical limitation. The penetrating sympathy of genius will, even from a village, traverse the whole world. What I mean is, that unless by personal experience, no matter through what avenues, a man has gained clear insight into the facts of life, he cannot successfully place them before us; and whatever insight he has gained, be it of important or of unimportant facts, will be of value if truly reproduced. No sunset is precisely similar to another, no two souls are affected by it in a precisely similar way. Thus may the commonest phenomenon have a novelty. To the eye that can read aright there is an infinite variety even in the most ordinary human being. But to the careless indiscriminating eye all individuality is merged in a misty generality. Nature and men yield nothing new to such a mind. Of what avail is it for a man to walk out into the tremulous mists of morning, to watch the slow sunset, and wait for the rising stars, if he can tell us nothing about these but what others have already told us—-if he feels nothing but what others have already felt? Let a man look for himself and tell truly what he sees. We will listen to that. We must listen to it, for its very authenticity has a subtle power of compulsion. What others have seen and felt we can learn better from their own lips.

II.

I have not yet explained in any formal manner what the nature of that insight is which constitutes what I have named the Principle of Vision; although doubtless the reader has gathered its meaning from the remarks already made. For the sake of future applications of the principle to the various questions of philosophical criticism which must arise in the course of this inquiry, it may be needful here to explain (as I have already explained elsewhere) how the chief intellectual operations—Perception, Inference, Reasoning, and Imagination—may be viewed as so many forms of mental vision.

Perception, as distinguished from Sensation, is the presentation before Consciousness of the details which once were present in conjunction with the object at this moment affecting Sense. These details are inferred to be still in conjunction with the object, although not revealed to Sense. Thus when an apple is perceived by me, who merely see it, all that Sense reports is of a certain coloured surface: the roundness, the firmness, the fragrance, and the taste of the apple are not present to Sense, but are made present to Consciousness by the act of Perception. The eye sees a certain coloured surface; the mind sees at the same instant many other co-existent but unapparent facts—it reinstates in their due order these unapparent facts. Were it not for this mental vision supplying the deficiencies of ocular vision, the coloured surface would be an enigma. But the suggestion of Sense rapidly recalls the experiences previously associated with the object. The apparent facts disclose the facts that are unapparent.

Inference is only a higher form of the same process. We look from the window, see the dripping leaves and the wet ground, and infer that rain has fallen. It is on inferences of this kind that all knowledge depends. The extension of the known to the unknown, of the apparent to the unapparent, gives us Science. Except in the grandeur of its sweep, the mind pursues the same course in the interpretation of geological facts as in the interpretation of the ordinary incidents of daily experience. To read the pages of the great Stone Book, and to perceive from the wet streets that rain has recently fallen, are forms of the same intellectual process. In the one case the inference traverses immeasurable spaces of time, connecting the apparent facts with causes (unapparent facts) similar to those which have been associated in experience with such results; in the other case the inference connects wet streets and swollen gutters with causes which have been associated in experience with such results. Let the inference span with its mighty arch a myriad of years, or link together the events of a few minutes, in each case the arch rises from the ground of familiar facts, and reaches an antecedent which is known to be a cause capable of producing them.

The mental vision by which in Perception we see the unapparent details—-i.e, by which sensations formerly co-existing with the one now affecting us are reinstated under the form of ideas which REPRESENT the objects—is a process implied in all Ratiocination, which also presents an IDEAL SERIES, such as would be a series of sensations, if the objects themselves were before us. A chain of reasoning is a chain of inferences: IDEAL presentations of objects and relations not apparent to Sense, or not presentable to Sense. Could we realise all the links in this chain, by placing the objects in their actual order as a VISIBLE series, the reasoning would be a succession of perceptions. Thus the path of a planet is seen by reason to be an ellipse. It would be perceived as a fact, if we were in a proper position and endowed with the requisite means of following the planet in its course; but not having this power, we are reduced to infer the unapparent points in its course from the points which are apparent. We see them mentally. Correct reasoning is the ideal assemblage of objects in their actual order of co-existence and succession. It is seeing with the mind's eye. False reasoning is owing to some misplacement of the order of objects, or to the omission of some links in the chain, or to the introduction of objects not properly belonging to the series. It is distorted or defective vision. The terrified traveller sees a highwayman in what is really a sign-post in the twilight; and in the twilight of knowledge, the terrified philosopher sees a Pestilence foreshadowed by an eclipse.

Let attention also be called to one great source of error, which is also a great source of power, namely, that much of our thinking is carried on by signs instead of images. We use words as signs of objects; these suffice to carry on the train of inference, when very few images of the objects are called up. Let any one attend to his thoughts and he will be surprised to find how rare and indistinct in general are the images of objects which arise before his mind. If he says "I shall take a cab and get to the railway by the shortest cut," it is ten to one that he forms no image of cab or railway, and but a very vague image of the streets through which the shortest cut will lead. Imaginative minds see images where ordinary minds see nothing but signs: this is a source of power; but it is also a source of weakness; for in the practical affairs of life, and in the theoretical investigations of philosophy, a too active imagination is apt to distract the attention and scatter the energies of the mind.

In complex trains of thought signs are indispensable. The images, when called up, are only vanishing suggestions: they disappear before they are more than half formed. And yet it is because signs are thus substituted for images (paper transacting the business of money) that we are so easily imposed upon by verbal fallacies and meaningless phrases. A scientific man of some eminence was once taken in by a wag, who gravely asked him whether he had read Bunsen's paper on the MALLEABILITY of light. He confessed that he had not read it: "Bunsen sent it to me, but I've not had time to look into it."