FORE:Apart, however, from abstract speculation, the ideal156 method seems to have exercised an immediate and powerful influence on Art, an influence which was anticipated by Socrates himself. In two conversations reported by Xenophon,102 he impresses on Parrhasius, the painter, and Cleito, the sculptor, the importance of so animating the faces and figures which they represented as to make them express human feelings, energies, and dispositions, particularly those of the most interesting and elevated type. And such, in fact, was the direction followed by imitative art after Pheidias, though not without degenerating into a sensationalism which Socrates would have severely condemned. Another and still more remarkable proof of the influence exercised on plastic representation by ideal philosophy was, perhaps, not foreseen by its founder. We allude to the substitution of abstract and generic for historical subjects by Greek sculpture in its later stages, and not by sculpture only, but by dramatic poetry as well. For early art, whether it addressed itself to the eye or to the imagination, and whether its subjects were taken from history or from fiction, had always been historical in this sense, that it exhibited the performance of particular actions by particular persons in a given place and at a given time; the mode of presentment most natural to those whose ideas are mainly determined by contiguous association. The schools which came after Socrates let fall the limitations of concrete reality, and found the unifying principle of their works in association by resemblance, making their figures the personification of a single attribute or group of attributes, and bringing together forms distinguished by the community of their characteristics or the convergence of their functions. Thus Aphrodit no longer figured as the lover of Ars or Anchiss, but as the personification of female beauty; while her statues were grouped together with images of the still more transparent abstractions, Love, Longing, and Desire. Similarly Apollo became a personification of musical enthusiasm, and Dionysus157 of Bacchic inspiration. So also dramatic art, once completely historical, even with Aristophanes, now chose for its subjects such constantly-recurring types as the ardent lover, the stern father, the artful slave, the boastful soldier, and the fawning parasite.103To master the various details of machine manufacture, including draughting, founding, forging, and fitting, is of itself a work equal to most professional pursuits, to say nothing of manual skill; and when we come to add machine functions and their application, generating and transmitting power, with other things that will necessarily be included in practice, the task assumes proportions that makes it appear a hopeless one. Besides, the work of keeping progress with the mechanic arts calls for a continual accretion of knowledge; and it is no small labour to keep informed of the continual changes and improvements that are going on in all parts of the world, which may at any time modify and change both machines and processes. But few men, even under the most favourable conditions, have been able to qualify themselves as competent mechanical engineers sooner than at forty years of age.
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