I have put this attribute of beauty last, because I consider it the girdle and safeguard of all the rest, and in this respect the most essential of all, for it is possible that a certain degree of beauty may be attained even in the absence of one of its other constituents, as sometimes in some measure without symmetry or without unity. But the least appearance of violence or extravagance, of the want of moderation and restraint, is, I think, destructive of all beauty whatsoever in everything, color, form, motion, language, or thought, giving rise to that which in color we call glaring, in form inelegant, in motion ungraceful, in language coarse, in thought undisciplined, in all unchastened; which qualities are in everything most painful, because the signs of disobedient and irregular operation. And herein we at last find the reason of that which has been so often noted respecting the subtilty and almost invisibility of natural curves and colors, and why it is that we look on those lines as least beautiful which fall into wide and far license of curvature, and as most beautiful which approach nearest (so that the curvilinear character be distinctly asserted) to the government of the right line, as in the pure and severe curves of the draperies of the religious painters; and thus in color it is not red, but rose-color which is most beautiful, neither such actual green as we find in summer foliage partly, and in our painting of it constantly; but such gray green as that into which nature modifies her distant tints, or such pale green and uncertain as we see in sunset sky, and in the clefts of the glacier and the chrysoprase, and the sea-foam; and so of all colors, not that they may not sometimes be deep and full, but that there is a solemn moderation even in their very fulness, and a holy reference beyond and out of their own nature to great harmonies by which they are governed, and in obedience to which is their glory. Whereof the ignorance is shown in all evil colorists by the violence and positiveness of their hues, and by dulness and discordance consequent, for the very brilliancy and real power of all color is dependent on the chastening of it, as of a voice on its gentleness, and as of action on its calmness, and as all moral vigor on self-command. And therefore as that virtue which men last, and with most difficulty attain unto, and which many attain not at all, and yet that which is essential to the conduct and almost to the being of all other virtues, since neither imagination, nor invention, nor industry, nor sensibility, nor energy, nor any other good having, is of full avail without this of self-command, whereby works truly masculine and mighty are produced, and by the signs of which they are separated from that lower host of things brilliant, magnificent and redundant, and farther yet from that of the loose, the lawless, the exaggerated, the insolent, and the profane, I would have the necessity