The proportions of this small book forbid me to develop further a theme, the adequate treatment of which would require more than the entire space at my command. I must be satisfied with the crude and unillumined exposition given already, allowing myself this further word only, that I do not mean to imply that we get no pleasure from a picture except the tactile satisfaction. On the contrary, we get much pleasure from composition, more from colour, and perhaps more still from movement, to say nothing of all the possible associative pleasures for which every work of art is the occasion. What I do wish to say is that _unless_ it satisfies our tactile imagination, a picture will not exert the fascination of an ever-heightened reality; first we shall exhaust its ideas, and then its power of appealing to our emotions, and its "beauty" will not seem more significant at the thousandth look than at the first. My need of dwelling upon this subject at all, I must repeat, arises from the fact that although this principle is important indeed in other schools, it is all-important in the Florentine school. Without its due appreciation it would be impossible to do justice to Florentine painting. We should lose ourselves in admiration of its "teaching," or perchance of its historical importance--as if historical importance were synonymous with artistic significance!--but we should never realise what artistic idea haunted the minds of its great men, and never understand why at a date so early it became academic. [Page heading: GIOTTO AND VALUES OF TOUCH]