<cartesianism, innatism, idealism, epistemology, monism> <rationalism, empiricism, neo-empiricism> ideas that are inborn rather than acquired through sensory experience. Socrates and Plato taught that such ideas were acquired by direct acquaintance (prior to birth) with the archetypes or Forms or according to which all things are constructed. Descartes, as well as other rationalists (in agreement with Plato) believe such "clear and distinct" innate ideas are the source of all real knowledge. Belief in innate ideas is the distinguishing feature of rationalism.
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