§ 2. For perfectness, properly so called, means harmony. The word signifies, literally, the doing our work _thoroughly_. It does not mean carrying it up to any constant and established degree of finish, but carrying the whole of it up to a degree determined upon. In a chalk or pencil sketch by a great master, it will often be found that the deepest shades are feeble tints of pale gray; the outlines nearly invisible, and the forms brought out by a ghostly delicacy of touch, which, on looking close to the paper, will be indistinguishable from its general texture. A single line of ink, occurring anywhere in such a drawing, would of course destroy it; placed in the darkness of a mouth or nostril, it would turn the expression into a caricature; on a cheek or brow it would be simply a blot. Yet let the blot remain, and let the master work up to it with lines of similar force; and the drawing which was before perfect, in terms of pencil, will become, under his hand, perfect in terms of ink; and what was before a scratch on the cheek will become a necessary and beautiful part of its gradation. All great work is thus reduced under certain conditions, and its right to be called complete depends on its fulfilment of them, not on the nature of the conditions chosen. Habitually, indeed, we call a colored work which is satisfactory to us, finished, and a chalk drawing unfinished; but in the mind of the master, all his work is, according to the sense in which you use the word, equally perfect or imperfect. Perfect, if you regard its purpose and limitation; imperfect, if you compare it with the natural standard. In what appears to you consummate, the master has assigned to himself terms of shortcoming, and marked with a sad severity the point up to which he will permit himself to contend with nature. Were it not for his acceptance of such restraint, he could neither quit his work, nor endure it. He could not quit it, for he would always perceive more that might be done; he could not endure it, because all doing ended only in more elaborate deficiency. § 3. But we are apt to forget, in modern days, that the reserve of a man who is not putting forth half his strength is different in manner and dignity from the effort of one who can do no more. Charmed, and justly charmed, by the harmonious sketches of great painters, and by the grandeur of their acquiescence in the point of pause, we have put ourselves to produce sketches as an end instead of a means, and thought to imitate the painter's scornful restraint of his own power, by a scornful rejection of the things beyond ours. For many reasons, therefore, it becomes desirable to understand precisely and finally what a good painter means by completion. § 4. The sketches of true painters may be classed under the following heads:-- I. _Experimental._--In which they are assisting an imperfect conception of a subject by trying the look of it on paper in different ways.