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 emblems, or mental words, of ideas. The ideas themselves he considered as mysterious powers, living, seminal, formative, and exempt from time. In this sense the word became the property of the Platonic school; and it seldom occurs in Aristotle, without some such phrase annexed to it, as according to Plato, or as Plato says. Our English writers to the end of Charles 2nd's reign, or somewhat later, employed it either in the original sense, or platonically, or in a sense nearly correspondent to our present use of the substantive, Ideal, always however opposing it, more or less, to image, whether of present or absent objects. The reader will not be displeased with the following interesting exemplification from Bishop Jeremy Taylor. "St. Lewis the King sent Ivo Bishop of Chartres on an embassy, and he told, that he met a grave and stately matron on the way with a censor of fire in one hand, and a vessel of water in the other; and observing her to have a melancholy, religious, and phantastic deportment and look, he asked her what those symbols meant, and what she meant to do with her fire and water; she answered, my purpose is with the fire to burn paradise, and with my water to quench the flames of hell, that men may serve God purely for the love of God. But we rarely meet with such spirits which love virtue so metaphysically as to abstract her from all sensible compositions, and love the purity of the idea." Des Cartes having introduced into his philosophy the fanciful hypothesis of material ideas, or certain configurations of the brain, which were as so many moulds to the influxes of the external world, Mr. Lock adopted the term, but extended its signification to whatever is the immediate object of the mind's attention or consciousness. Mr. Hume, distinguishing those representations which are accompanied with a sense of a present object from those reproduced by the mind itself, designated the former by impressions, and confined the word idea to the latter. sensation in order to become mutually associable. The same result will follow when one only of the two ideas has been represented by the senses, and the other by the memory.

Long however before either Hobbs or Des Cartes the law of association had been defined,