The Analogies are regulative
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The Analogies are regulative book
Kants account of the difference between dreams and waking experience also bears out the view that actuality or existence is known through a combination of sense-perception and thought: indeed to deny this is to give up the whole Critical doctrine. Kant says that sense-perception is the only mark of actuality, we have no right to separate this statement from its context, and to suppose that for Kant sense-perception by itself, apart from thought, can give us knowledge of existence. His exposition of the Postulates is, as he have already suggested, comparatively simple and straightforward. In the same way the Postulates of Modality are concerned with the synthesis through which alone the concepts of possibility, actuality, and necessity can arise. Kant in conclusion explains why he uses the word postulate for the Principles of Modality. He does not use the word postulate, as was apparently done at the time, for propositions which are immediately certain or self-evident.