It is the cruel function of “transcendental dialectic” to examine the validity of these attempts of reason to escape from the enclosing circle of sensation and appearance into the unknowable world of things “in themselves.” Antinomies are the insoluble dilemmas born of a science that tries to overleap experience. So, for example, when knowledge attempts to decide whether the world is finite or infinite in space, thought rebels against either supposition: beyond any limit, we are driven to conceive something further, endlessly; and yet infinity is itself inconceivable. Again: did the world have
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