It is the emotions which art suggests outside itself which have been viewed by one school as more interesting than art itself, and it is the sensuous qualities in painting--colour and texture--which are the visible agents, and convey more readily these suggestions of emotions in our northern temperaments than do beautiful lines and forms. Our northern temperaments also love symbolism and mysticism, therefore are apt to favour the art that meets a veiled condition of things; and the perfection of complete finish in nature's form is no longer held up as a standard for the student to aim at. Leighton had no sympathy with the artificial, neither had he any with the shadow put in the place of the substance. The actual was ever sufficient for him, for in nature herself he never failed to find sufficient inspiration. The mind of the Creator in matter is what the ingenuous artist temperament searches for and is inspired to record; whereas it is, on the one hand, phases of human moods, selections from human passions, good, bad, and indifferent, which are made to saturate the feeling in much of our modern art, or, on the other hand, aspects of nature's moods given without the framework of her structure, and without the detail of her perfection. It may be argued, however, that there are among the most beautiful effects in nature those which are not fully distinct to the sight--the shimmering iridescence on a shell, where one colour is seen sparkling against another through a film, or the waving branches of a willow, the liquid shifting of a flowing stream, or the endless effects of cloud and mist in a northern sky. To express this in paint requires an appropriate treatment in the manipulation of the pigment itself. Watts' theory was that you have to unfinish the record of certain facts in order to render the truth of the whole fact (see also Steinle's criticism on Leighton's head of "Vincenzo," 1854). He would, therefore, film his painting over with a scumble of white, and only partially repaint the surface, in order to get at that whole truth which includes the bloom of atmosphere and the veil of northern mists. Leighton is thought at times to have erred on the side of explicitness, and the texture of his surface is apt undoubtedly to lack the vibrating quality which carries with it a beauty of its own. This is partly accounted for by the fact that he had imbibed the rudiments of his teaching in a school whose followers were not sensitive to the finest qualities in oil painting, but also probably from his extreme desire to give expression to his sense of the intense finish in nature.