A further aspect in the _second_ place is the _harmony_ of the colouring.
I have already observed that the very nature of the facts necessitates that colour should have itself an articulated system. And this complete result should appear. No fundamental colour should be wholly omitted, otherwise our sense of this integrated whole is lost. To an exceptional degree the old Italian masters and the Dutch satisfy us in this respect. We find in their pictures blue, yellow, red, and green[290]. It is this completeness which supplies the basis of our colour harmony. The colours, moreover, must be so arranged that not merely their artistic contrast, but also their mediation and resolution, and a repose and reconciliation as the result of such, is made visible to the sight. Such effective contrast and repose in conciliated extremes is brought about partly by the way the colours are associated, and partly by the degree of intensity which characterizes each colour. In early painting it was principally the Dutch school[291], which employed the cardinal colours in their purity and their unimpaired brilliance, by which means the harmony is rendered more difficult by reason of the emphasis laid on contrast, but when secured should be pleasing to the eye. Where, however, the decisive character and force of colour is insisted on the nature of the subject-matter itself should be more definite and simple. And by attending to this a higher degree of harmony between colouring and content is also obtained. The important personages, for instance, must receive the colour that is most emphatic, and in their characterization, their entire deportment and expression should appear more imposing than the subordinate figures, who will receive merely the composite colours. In landscape painting the contrast of pure cardinal colours is less pronounced. In scenes, on the contrary, in which human figures are of most importance, and more particularly where drapery occupies large spaces of canvas, the more simple colours will be in their right place. In such we have a scene taken from the world of spiritual life, in which that which is inorganic, the natural environment, is more abstract, in other words must not appear in its natural completeness and isolated manner of effect, and the varied tints of landscape in all the profusion of their gradations are less suitable. As a rule the landscape is not so entirely fitted to the environment of human scenes as a room, or generally that which is architectural, inasmuch as situations which take place in the open air are in general not accepted from a class in which the life of soul without considerable reserve is manifested. If a man is placed before us with the open landscape around him it should appear simply as environment. And in cases of this type it is right to make use of colours that are exceptionally prominent. But the use of such involves also boldness and power of execution. Sickly sweet, overpowered[292], doting faces are not the kind for such treatment. Such soft expressions, such over-diluted countenances, which, ever since Mengs gave them as people are wont to think typical of ideality, would be entirely pulverized by such decision of colour. In recent times and among us Germans, weak faces which have essentially nothing to say[293], carefully posed in ways that imagine themselves to possess grace, simplicity, and imposing character, are all the fashion. This lack of distinction, on the side of spiritual characterization, has its counterpart in and indeed produces a similar lack of definition in colour and tone, so that all colours are run together in one confusion, and forceless condition of mutilation and evaporization, and no real emphasis is laid on any. You cannot say that one suppresses another exactly, but then none adds contrast to another. It is no doubt a colour harmony of a kind, and frequently it impresses with its excessive sweetness and flattering endearment, but the note of distinction is absent. In this connection Goethe thus expresses himself in his observations added to the translation of Diderot's essay on painting: "Critics do not by any means admit that it is easier to make weak colour harmonious than a strong scheme: but it stands to reason when colour is strong, when colours are placed before us vividly, in that case the eye will experience their harmony or discord with greater vividness. If, however, we weaken our colours, employ some with brilliance, others in fusion, others in obscure squalour, then it is obvious no one will be able to say whether the picture he looks at is harmonious or not. One thing in any case we can say of it, it lacks distinction."