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Bruno himself acted as a mediator between the two philo384sophies. His sympathies with Platonism were strongly pronounced, he looked with admiration on its mediaeval supporters, especially David of Dinan; and regretted the time when Oxford was a focus of realistic teaching, instead of being what he found her, devoted to the pedantic humanism of the Renaissance.547 He fully accepted the pantheistic conclusions towards which Platonism always tended; but in proclaiming an absolute principle whence all specific differences are evolved, he is careful to show that, while it is neither Form nor Matter in the ordinary sense, it may be called Matter in the more refined signification attached to that term by Plotinus and, indeed, by Aristotle himself. There is a common substance underlying all abstract essences, just as there is a common substance left behind when the sensible qualities of different bodies are stripped off; and both are, at bottom, the same. Thus monism became the banner round which the older forms of Greek speculation rallied in their assault on Aristotle��s philosophy, though what monism implied was as yet very imperfectly understood.But the enthusiasm for science, however noble in itself, would not alone have sufficed to mould the Epicurean philosophy into a true work of art. The De Rerum Natura is the greatest of all didactic poems, because it is something more than didactic. Far more truly than any of its Latin successors, it may claim comparison with the epic and dramatic masterpieces of Greece and Christian Europe; and that too not by virtue of any detached passages, however splendid, but by virtue of its composition as a whole. The explanation of this extraordinary success is to be sought in the circumstance that the central interest whence Lucretius works out in all directions is vital rather than merely scientific. The true heroine of his epic is not Nature but universal life��human life in the first instance, then the life of all the lower animals, and even of plants as well. Not only does he bring before us every stage of man��s existence from its first to its last hour106 with a comprehensiveness, a fidelity, and a daring unparalleled in literature; but he exhibits with equal power of portrayal the towered elephants carrying confusion into the ranks of war, or girdling their own native India with a rampart of ivory tusks; the horse with an eagerness for the race that outruns even the impulse of his own swift limbs, or fiercely neighing with distended nostrils on the battlefield; the dog snuffing an imaginary scent, or barking at strange faces in his dreams; the cow sorrowing after her lost heifer; the placid and laborious ox; the flock of pasturing sheep seen far off, like a white spot on some green hill; the tremulous kids and sportive lambs; the new-fledged birds filling all the grove with their fresh songs; the dove with her neck-feathers shifting from ruby-red to sky-blue and emerald-green; the rookery clamouring for wind or rain; the sea birds screaming over the salt waves in search of prey; the snake sloughing its skin; the scaly fishes cleaving their way through the yielding stream; the bee winging its flight from flower to flower; the gnat whose light touch on our faces passes unperceived; the grass refreshed with dew; the trees bursting into sudden life from the young earth, or growing, flourishing, and covering themselves with fruit, dependent, like animals, on heat and moisture for their increase, and glad like them:��all these helping to illustrate with unequalled variety, movement, and picturesqueness the central idea which Lucretius carries always in his mind.[93]In the use of hydraulic apparatus for transmitting and applying power, there is, however, this difficulty to be contended with: water is inelastic, and for the performance of irregular duty, there is a loss of power equal to the difference between the duty that a piston may perform and what it does perform; that is, the amount of water, and consequently the amount of power given off, is as the movement and volume of the water, instead of as the work done. The application of hydraulic machinery to the lifting and handling of weights will be further noticed in another place.There was a long, long silence, a silence that could be felt.<000005>