Furthermore and again like Hume, he realized that they entailed consequences which were of more than merely academic interest. For they apparently impinged, with destructive effect, upon the various efforts that had been made over the centuries to prove propositions fundamental to the Christian religion, above all those concerning the existence and nature of God: in Kant’s opinion, it unquestionably followed from his criticisms that ‘all attempts to make a purely speculative use of reason in reference to theology are entirely fruitless and of their inner nature null and void’.
