The materials in which the artist works are of the greatest importance in determining what qualities in the infinite complexity of nature he selects for expression. And the good draughtsman will find out the particular ones that belong to whatever medium he selects for his drawing, and be careful never to attempt more than it is capable of doing. Every material he works with possesses certain vital qualities peculiar to itself, and it is his business to find out what these are and use them to the advantage of his drawing. When one is working with, say, pen and ink, the necessity for selecting only certain things is obvious enough. But when a medium with the vast capacity of oil paint is being used, the principle of its governing the nature of the work is more often lost sight of. So near can oil paint approach an actual illusion of natural appearances, that much misdirected effort has been wasted on this object, all enjoyment of the medium being subordinated to a meretricious attempt to deceive the eye. And I believe a popular idea of the art of painting is that it exists chiefly to produce this deception. No vital expression of nature can be achieved without the aid of the particular vitality possessed by the medium with which one is working. If this is lost sight of and the eye is 272tricked into thinking that it is looking at real nature, it is not a fine picture. Art is not a substitute for nature, but an expression of feeling produced in the consciousness of the artist, and intimately associated with the material through which it is expressed in his work—inspired, it may be, in the first instance, by something seen, and expressed by him in painted symbols as true to nature as he can make them while keeping in tune to the emotional idea that prompted the work; but never regarded by the fine artist as anything but painted symbols nevertheless. Never for one moment does he intend you to forget that it is a painted picture you are looking at, however naturalistic the treatment his theme may demand.

In the earlier history of art it was not so necessary to insist on the limitations imposed by different mediums. With their more limited knowledge of the phenomena of vision, the early masters had not the same opportunities of going astray in this respect. But now that the whole field of vision has been discovered, and that the subtlest effects of light and atmosphere are capable of being represented, it has become necessary to decide how far complete accuracy of representation will help the particular impression you may intend your picture or drawing to create. The danger is that in producing a complete illusion of representation, the particular vitality of your medium, with all the expressive power it is capable of yielding, may be lost.

Perhaps the chief difference between the great masters of the past and many modern painters is the neglect of this principle. They represented nature in terms of whatever medium they worked in, and273never overstepped this limitation. Modern artists, particularly in the nineteenth century, often attempted to copy nature, the medium being subordinated to the attempt to make it look like the real thing. In the same way, the drawings of the great masters were drawings. They did not attempt anything with a point that a point was not capable of expressing. The drawings of many modern artists are full of attempts to express tone and colour effects, things entirely outside the true province of drawing. The small but infinitely important part of nature that pure drawing is capable of conveying has been neglected, and line work, until recently, went out of fashion in our schools.

There is something that makes for power in the limitations your materials impose. Many artists whose work in some of the more limited mediums is fine, are utterly feeble when they attempt one with so few restrictions as oil paint. If students could only be induced to impose more restraint upon themselves when they attempt so difficult a medium as paint, it would be greatly to the advantage of their work. Beginning first with monochrome in three tones, as explained in a former chapter, they might then take for figure work ivory black and Venetian red. It is surprising what an amount of colour effect can be got with this simple means, and how much can be learned about the relative positions of the warm and cold colours. Do not attempt the full range of tone at first, but keep the darks rather lighter and the lights darker than nature. Attempt the full scale of tone only when you have acquired sufficient experience with the simpler range, and gradually add more colours as you learn to master a few. But restraints are274not so fashionable just now as unbridled licence. Art students start in with a palette full of the most amazing colours, producing results that it were better not to discuss. It is a wise man who can discover his limitations and select a medium the capacities of which just tally with his own. To discover this, it is advisable to try many, and below is a short description of the chief ones used by the draughtsman. But very little can be said about them, and very little idea of their capacities given in a written description; they must be handled by the student, and are no doubt capable of many more qualities than have yet been got out of them.