A true artist employs his medium as an instrument of expression; and he values his own technical skill in the handling of it according to the measure that he is enabled thereby to express himself more effectively. On the layman's part so much knowledge of technique is necessary as makes it possible for him to understand the artist's language and the added expressiveness wrought out of language by the artist's cunning use of it. And such knowledge is not beyond his reach.

In order to understand the meaning of any language we must first understand the signification of its terms, and then we must know something of the ways in which they may be combined into articulate forms of expression. The terms of speech are words; in order to speak coherently and articulately we must group words into sentences according to the laws of the tongue to which they belong. Similarly, every art has its terms, or "parts of speech," and its grammar, or the ways in which the terms are combined. The terms of painting are color and form, the terms of music are tones. Colors and forms are brought together into harmony and balance that by their juxtaposition they may be made expressive and beautiful. Tones are woven into a pattern according to principles of harmony, melody, and rhythm, and they become music. When technique is turned to such uses, not for the vainglory of a virtuoso, but for the service of the artist in his earnest work of expression, then it identifies itself with art.

A knowledge of the signification of the terms of art the layman may win for himself by a recognition of the expressive power of all material and by sensitiveness to it. The beholder will not respond to the appeal of a painting of a landscape unless he has himself felt something of the charm or glory of landscape in nature; he will not quicken and expand to the dignity or force caught in rigid marble triumphantly made fluent in statue or relief until he has realized for himself the significance of form and movement which exhales from every natural object. Gesture is a universal language. The mighty burden of meaning in Millet's picture of the "Sower" is carried by the gesture of the laborer as he swings across the background of field and hill, whose forms also are expressive; here, too, the elemental dignity of form and movement is reinforced by the solemnity of the color. Gesture is but one of nature's characters wherewith she inscribes upon the vivid, shifting surface of the world her message to the spirit of man. A clue to the understanding of the terms of art, therefore, is found in the layman's own appreciation of the emotional value of all objects of sense and their multitudinous power of utterance,—the sensitive decision of line, the might or delicacy of form, the splendor and subtlety of color, the magic of sound, the satisfying virtue of harmony in whatever embodiment, all the beauty of nature, all the significance of human life. And this appreciation is to be won largely by the very experience of it. The more we feel, the greater becomes our power for deeper feeling. Every emotion to which we thrill is the entrance into larger capacity of emotion. We may allow for growth and trust to the inevitable working of its laws. In the appreciation of both life and art the individual may be his own teacher by experience.

The qualities of objects with their inherent emotional values constitute the raw material of art, to be woven by the artist into a fabric of expressive form and texture. Equipped with a knowledge of the terms of any art, the layman has yet to understand something of the ways in which the terms may be combined. Every artist has his idiom or characteristic style. Rembrandt on the flat surface of his canvas secures the illusion of form in the round by a system of light and shade; modeling is indicated by painting the parts in greater relief in light and the parts in less relief in shadow. Manet renders the relief of form by a system of "values," or planes of more and less light. The local color of objects is affected by the amount of light they receive and the distance an object or part of an object is from the eye of the spectator. Manet paints with degrees of light, and he wins his effects, not by contrasts of color, but by subtle modulations within a given hue. Landscape painters before the middle of the nineteenth century, working with color in masses, secured a total harmony by bringing all their colors, mixed upon the palette, into the same key. The "Luminarists," like Claude Monet, work with little spots or points of color laid separately upon the canvas; the fusion of these separate points into the dominant tone is made by the eye of the beholder. The characteristic effect of a work of art is determined by the way in which the means are employed. Some knowledge, therefore, of the artist's aims as indicated in his method of working is necessary to a full understanding of what he wants to say.

In his effort to understand for his own purposes of appreciation what the artist has accomplished by his technique, the layman may first of all distinguish between processes and results. A landscape in nature is beautiful to the beholder because he perceives in it some harmony of color and form which through the eye appeals to the emotions. His vision does not transmit every fact in the landscape; instinctively his eye in its sweep over meadow and trees and hill selects those details that compose. By this act of integration he is for himself in so far forth an artist. If he were a painter he would know what elements in the landscape to put upon his canvas. But he has no skill in the actual practice of drawing and of handling the brush, no knowledge of mixing colors and matching tones; he understands nothing of perspective and "values" and the relations of light and shade. He knows only what he sees, that the landscape as he sees it is beautiful; and equally he recognizes as beautiful the presentment of it upon canvas. He is ignorant of the technical problems with which the painter in practice has had to contend in order to reach this result; it is the result only that is of concern to him in so far as it is or is not what he desires. The painter's color is significant to him, not because he knows how to mix the color for himself, but because that color in nature has spoken to him unutterable things and he has responded to it. The layman cannot make a sunset and he cannot paint a picture; but he can enjoy both. So he cares, then, rather for what the painter has done than for how he has done it, because the processes do not enter into his own experience. The picture has a meaning for him in the measure that it expresses what he perceives and feels, and that is the beauty of the landscape.

Any knowledge of technical processes which the layman may happen to possess may be a source of intellectual pleasure. But for appreciation, only so much understanding of technique is necessary as enables him to receive the message of a given work in the degree of expressiveness which the artist by his use of his medium has attained. A clue to this understanding may come to him by intuition, by virtue of his own native insight and intelligence. He may gain it by reading or by instruction. He may go out and win it by intrepid questioning of those who know; and it is to be hoped that such will be very patient with him, for after all even a layman has the right to live. Once started on the path, then, in the mysteries of art as in the whole complex infinite business of living, he becomes his own tutor by observation and experience; and he may develop into a fuller knowledge in obedience to the law of growth. Each partial clue to understanding brings him a step farther on his road; each new glimmer of insight beckons him to ultimate illumination. Though baffled at the outset, yet patient under disappointment, undauntedly he pushes on in spite of obstacles, until he wins his way at last to true appreciation.

If the layman seeks a standard by which to test the value of any technical method, he finds it in the success of the work itself. Every method is to be judged in and for itself on its own merits, and not as better or worse than some other method. Individually we may prefer Velasquez to Frans Hals; Whistler may minister to our personal satisfaction in larger measure than Mr. Sargent; we may enjoy Mr. James better than Stevenson; Richard Strauss may stir us more deeply than Brahms. We do not affirm thereby that impressionism is inherently better than realism, or that subtlety is more to be desired than strength; the psychological novel is not necessarily greater than romance; because of our preference "programme music" is not therefore more significant than "absolute music." The greatness of an artist is established by the greatness of his ideas, adequately expressed. And the value of any technical method is determined by its own effectiveness for expression.

There is, then, no invariable standard external to the work itself by which to judge technique. For no art is final. A single work is the manifestation of beauty as the individual artist has conceived or felt it. The perception of what is beautiful varies from age to age and with each person. So, too, standards of beauty in art change with each generation; commonly they are deduced from the practice of preceding artists. Classicism formulates rules from works that have come to be recognized as beautiful, and it requires of the artist conformity to these rules. By this standard, which it regards as absolute, it tries a new work, and it pretends to adjudge the work good or bad according as it meets the requirements. Then a Titan emerges who defies the canons, wrecks the old order, and in his own way, to the despair or scorn of his contemporaries, creates a work which the generation that follows comes to see is beautiful. "Every author," says Wordsworth, "as far as he is great and at the same time original, has had the task of creating the taste by which he is to be enjoyed." Wordsworth in his own generation was ridiculed; Millet, when he ceased painting nudes for art-dealers' windows and ventured to express himself, faced starvation. Every artist is in some measure an innovator; for his own age he is a romanticist. But the romanticist of one age becomes a classic for the next; and his performance in its turn gives laws to his successors. Richard Strauss, deriving in some sense from Wagner, makes the older man seem a classic and conservative. Then a new mind again is raised up, a new temperament, with new needs; and these shape their own adequate new expression. "The cleanest expression," says Whitman, "is that which finds no sphere worthy of itself and makes one." As all life is growth, as there are no bounds to the possibilities of human experience, so the workings of the art-impulse cannot be compressed within the terms of a hard and narrow definition, and any abstract formula for beauty is in the very nature of things foredoomed to failure. No limit can be set to the forms in which beauty may be made manifest.

"The true poets are not followers of beauty, but the august masters of beauty." And Whitman's own verse is a notable example of a new technique forged in response to a new need of expression. Dealing as he did with the big basic impulses of common experience accessible to all men, Whitman needed a largeness and freedom of expression which he did not find in the accepted and current poetic forms. To match the limitlessly diversified character of the people, occupations, and aspirations of "these States," as yet undeveloped but vital and inclosing the seed of unguessed-at possibilities, to tally the fluid, indeterminate, outward-reaching spirit of democracy and a new world, the poet required a medium of corresponding scope and flexibility, all-inclusive and capable of endless modulation and variety. Finding none ready to his hand, he created it. Not that Whitman did not draw for his resources on the great treasury of world-literature; and he profited by the efforts and achievement of predecessors. But the form in his hands and as he uses it is new. Whatever we may think of the success of his total accomplishment, there are very many passages to which we cannot deny the name of poetry. Nor did Whitman work without conscious skill and deliberate regard for technical processes. His note-books and papers reveal the extreme calculation and pains with which he wrote, beginning with the collection of synonyms applying to his idea and mood, and so building them up gradually, with many erasures, corrections, and substitutions, into the finished poem. Much of the vigor of his style is due to his escape from conventional literary phrase-making and his return to the racy idiom of common life. His verse, apparently inchoate and so different from classical poetic forms, is shaped with a cunning incredible skill. And more than that, it is art, in that it is not a bare statement of fact, but communicates to us the poet's emotion, so that we realize the emotion in ourselves. When his purpose is considered, it is seen that no other technique was possible. His achievement proves that a new need creates its own means of expression.

What is true of Whitman in respect to his technique is true in greater or less degree of every artist, working in any form. It is true of Pheidias, of Giotto and Michelangelo and Rembrandt, of Dante and Shakespeare, of Beethoven and Wagner, of Monet, of Rodin, in fine, from the beginnings of art to the day that now is. All have created out of existing forms of expression their own idiom and way of working. Every artist owes something to his predecessors, but language is re-created in the hands of each master and becomes a new instrument. There can be then no single formula for technical method nor any fixed and final standard of judgment.