Variety. Why required

Hence, out of the necessity of unity, arises that of variety, a necessity often more vividly, though never so deeply felt, because lyingat the surfaces of things, and assisted by an influential principle of our nature, the love of change, and the power of contrast. But it is a mistake which has led to many unfortunate results, in matters respecting art, to insist on any inherent agreeableness of variety, without reference to a farther end. For it is not even true that variety as such, and in its highest degree, is beautiful. A patched garment of many colors is by no means so agreeable as one of a single and continuous hue; the splendid colors of many birds are eminently painful from their violent separation and inordinate variety, while the pure and colorless swan is, under certain circumstances, the most beautiful of all feathered creatures. A forest of all manner of trees is poor, if not disagreeable in effect,a mass of one species of tree is sublime. It is therefore only harmonious and chordal variety, that variety which is necessary to secure and extend unity, (for the greater the number of objects, which by their differences become members of one another, the more extended and sublime is their unity,) which is rightly agreeable, and so I name not variety as essential to beauty, because it is only so in a secondary and casual sense. art oil paintings for sale