Now, when, in the exercise of the artistic instincts, mankind are partially obeying some other call than this one--the desire for money, fame, or for some intellectual formula--things are quite different, and there is no production of what I have called harmony. There is no congruity when even great people set about doing pseudo-antique sculpture in Canova-Thorwaldsen fashion because Winckelmann and Goethe have made antique sculpture fashionable; there is no congruity when people set to building pseudo-Gothic in obedience to the romantic movement and to Ruskin. For neither the desire for making a mark, nor the most conscientious pressure of formula gives that instinct of selection and co-ordination characterising even the most rudimentary artistic efforts in the most barbarous ages, when men are impelled merely and solely by the aesthetic instinct. Moreover, where people do not want and need (as they want and need food or drink or warmth or coolness) one sort of effect, that is to say, one arrangement of impressions rather than another, they are sure to be deluded by the mere arbitrary classification, the mere _names_ of things. They will think that smooth cheeks, wavy hair, straight noses, limbs of such or such measure, attitude, and expression, set so, constitute the Antique; that clustered pillars, cross vaulting, spandrils, and Tudor roses make Gothic. But the Antique quality is the particular and all permeating relation between all its items; and Gothic the particular and all permeating relation between those other ones; and unless you aim at the _specific emotion_ of Antique or Gothic, unless you feel the imperious call for the special harmony of either, all the measurements and all the formulas will not avail. While, on the contrary, people without any formula or any attempt at imitation, like the Byzantine architects and those of the fifteenth century, merely because they are obeying their own passionate desire for congruity of impressions, for harmony of structure and function, will succeed in creating brand-new, harmonious, organic art out of the actual details, sometimes the material ruins, of an art which has passed away. If we become intimate with any great work of art, and intimate in so far with the thoughts and emotions it awakens in ourselves, we shall find that it possesses, besides this congruity within itself which assimilates it to all really living things, a further congruity, not necessarily found in real objects, but which forms the peculiarity of the work of art, a congruity with ourselves; for the great work of art is vitally connected with the habits and wants, the whole causality and rhythm of mankind; it has been fitted thereto as the boat to the sea. IV. In this manner can we learn from art the chief secret of life: the secret of action and reaction, of causal connection, of suitability of part to part, of organism, interchange, and growth.