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ONE:Fourth. Pressure wheels, acting in every respect upon the principle of a rotary steam-engine, except in the differences that arise from operating with an elastic and a non-elastic fluid; the pressure of the water resting continually against the vanes and "abutment," without means of escape except by the rotation of the wheel. Read More

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ONE:"Surely, a curious coincidence!" Lawrence cried.Thus we have, in all, five gradations: the One, Nous, Soul, the sensible world, and, lastly, unformed Matter. Taken together, the first three constitute a triad of spiritual principles, and, as such, are associated in a single group by Plotinus.467 Sometimes they are spoken of as the Alexandrian Trinity. But the implied comparison with the Trinity of Catholicism is misleading. With Neo-Platonism, the supreme unity is, properly speaking, alone God and alone One. Nous is vastly inferior to the first principle, and Soul, again, to Nous. Possibly the second and third principles are personal; the first most certainly is not, since self-consciousness is expressly denied to it by Plotinus. Nor is it likely that the idea of a supernatural triad was suggested to Neo-Platonism by Christianity. Each of the three principles may be traced to its source in Greek philosophy. This has been already shown in the case of the One and of the Nous. The universal soul is to be found in Plato��s Timaeus; it is analogous, at least in its lower, divided part, to Aristotle��s Nature; and it is nearly identical with the informing spirit of Stoicism. As to the number three, it was held in high esteem long before the Christian era, and was likely to be independently employed for the construction of different systems at a time when belief in the magical virtue of particular numbers was more widely diffused than at any former period of civilised history. Read More