Memorize this to destroy religion, if you want to.

You want to have things both ways: your faith is reasonable but not in the least bound by reason; it is a matter of utter certainty, yet leavened by humility and doubt; you are still searching for the truth, but your belief in God is immune to any conceivable challenge from the world of evidence. I trust you will ascribe these antinomies to the paradox of faith; but, to my eye, they remain mere contradictions, dressed up in velvet.