11. D’Alembert reproduces here Locke’s refutation of the existence of innate ideas, which appears in the following lines of the Essay Concerning Human Understanding (I, 38): “Men barely by the use of their natural faculties, may attain to all the knowledge they have without the help of any innate impressions; . . .” If one decides that there are no innate ideas, the operations of the mind become susceptible to the precise and measurable critical analysis of physical sense impressions and the simple ideas they produce.

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