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But, letting these subjects pass, I would gladly learn from my opponents whether, when they see dogs, horses, and domestic birds, through habituation, breeding, and teaching, uttering intelligible sounds and moving and assuming postures in subordination to reason, and acting in a manner conformable to due proportion and our advantage; and when they hear Homer declaring that Achilles Urged on both horses and menAdapted from Il., xvi. 167. to battle - whether, I say, they still wonder and are in doubt that the element in us which is spirited and appetitive and experiences pain and pleasure, does, by its very nature, harken to the intelligence, and is affected and harmoniously disposed by its agency, and does not dwell apart from the intelligence, nor is it separated therefrom, nor moulded from without the body, nor formed by any extraneous violence or blows, but that by its nature it is dependent upon the intelligence and is always in association with it and nurtured together with it and influenced by familiar intercourse.
