What is the point at which ordinary pleasures pass over into the specific pleasures derived from each one of the arts? Our judgment about the merits of any given work of art depends to a large extent upon our answer to this question. Those who have not yet differentiated the specific pleasures of the art of painting from the pleasures they derive from the art of literature, will be likely to fall into the error of judging the picture by its dramatic presentation of a situation or its rendering of character; will, in short, demand of the painting that it shall be in the first place a good _illustration_. Those others who seek in painting what is usually sought in music, the communication of a pleasurable state of emotion, will prefer pictures which suggest pleasant associations, nice people, refined amusements, agreeable landscapes. In many cases this lack of clearness is of comparatively slight importance, the given picture containing all these pleasure-giving elements in addition to the qualities peculiar to the art of painting. But in the case of the Florentines, the distinction is of vital consequence, for they have been the artists in Europe who have most resolutely set themselves to work upon the specific problems of the art of figure-painting, and have neglected, more than any other school, to call to their aid the secondary pleasures of association. With them the issue is clear. If we wish to appreciate their merit, we are forced to disregard the desire for pretty or agreeable types, dramatically interpreted situations, and, in fact, "suggestiveness" of any kind. Worse still, we must even forego our pleasure in colour, often a genuinely artistic pleasure, for they never systematically exploited this element, and in some of their best works the colour is actually harsh and unpleasant. It was in fact upon form, and form alone, that the great Florentine masters concentrated their efforts, and we are consequently forced to the belief that, in their pictures at least, form is the principal source of our aesthetic enjoyment.