Where, however, the illustration is purely imaginative, the decorative standpoint should be kept steadily in view, and the process of selection and abstraction carried very much farther. Here, at length, the illustrator can so order his design that the drawing and the printed type form a single piece of decoration, not disregarding the type, but using it as in itself a means of obtaining texture and scale and distributed effect. The type is, as it were, the technical datum of the design, which determines the scale of the line to be used with it. With a wiry type no doubt a wiry drawing is desirable, but the types of the great periods of printing are firm in outline and large and ample in distribution. Assuming, then, that one of these types can be used, the line of the accompanying design should be strongly drawn, and designed from end to end with full allowance for the white paper. No better model can be followed than Dürer's woodcuts. The amount of work which Dürer would get out of a single line is something extraordinary, and perhaps to us impossible; for in view of our complex modern ideas and total absence of tradition, probably no modern designer can hope to attain to the great German's magnificent directness and tremendous intensity of expression.
Deliberate selection, both in subject and treatment, becomes therefore a matter of the first importance. The designer should reject subjects which do not admit of a decorative treatment. His business is not with science, or morals, but with art for its own sake; he should, therefore, select his subject with a single eye to its artistic possibilities. As to the line itself, it is impossible to offer any suggestion, for the line used is as much a part of the designer's idea as the words of a poem are of a poet's poetry; and the invention of these must come of itself. But once in consciousness, the line must be put under rigid control as simply a means of expression. There is an insidious danger in the line. Designers sometimes seem to be inebriated with their own cunning; they go on drawing line after line, apparently for the simple pleasure of deftly placing them side by side, or at best to produce some spurious imitation of texture. As soon as the line is made an end in itself, it becomes a wearisome thing. The use of the line and the imitation of texture should be absolutely subordinated to the decorative purposes of the design, and the neglect of this rule is as bad art as if a musician, from perverse delight in the intricacies of a fugue, were to lose his theme in a chaos of counterpoint.