impatiently and so much without worth that it would be better not to do it at all. One recognises the knowledge of a great man in the fear with which he does a thing the more he understands it; and, on the contrary, the ignorance of others in the foolhardy daring with which they fill pictures with what they know nothing about. There may be an excellent master who has never painted more than a single figure, and without painting anything more deserves more renown and honour than those who have painted a thousand pictures: he knows better how to do what he has not done than the others know what they do.
Michael Angelo.
CXXIV
It is known that bodies in motion always describe some line or other in the air, as the whirling round of a firebrand apparently makes a circle, the waterfall part of a curve, the arrow and bullet, by the swiftness of their motions, nearly a straight line; waving lines are formed by the pleasing movement of a ship on the waves. Now, in order to obtain a just idea of action, at the same time to be judiciously satisfied of being in the right in what we do, let us begin with imagining a line formed in the air by any supposed point at the end of a limb or part that is moved, or made by the whole part or limb, or by the whole body together. And that thus much of movements may be conceived at once is evident, on the least recollection;
for whoever has seen a fine Arabian war-horse, unbacked and at liberty, and in a wanton trot, cannot but remember what a large waving line his rising, and at the same time pressing forward cuts through the air, the equal continuation of which is varied by his curveting from side to side; whilst his long mane and tail play about in serpentine movements.
Hogarth.
CXXV
Distinguish the various planes of a picture by circumscribing them each in turn; class them in the order in which they present themselves to the daylight; before beginning to paint, settle which have the same value. Thus, for example, in a drawing on tinted paper make the parts that glitter gleam out with your white, then the lights, rendered also with white, but fainter; afterwards those of the half-tones that can be managed by means of the paper, then a first half-tone with the chalk, &c. When at the edge of a plane which you have accurately marked, you have a little more light than at the centre of it, you give so much more definition of its flatness or projection. This is the secret of modelling. It will be of no use to add black; that will not give the modelling. It follows that one can model with very slight materials.