 None of this challenges the intelligibility of religious doctrines. So long as they are not self-contradictory, they are thinkable. It is just that their truth or falsehood cannot possibly be known. Moreover, since they are not within the spectrum of epistemic evaluation, we cannot opine regarding them, for opinion [Meinung], as Kant understands the term, is a mode of assent based upon the weighing of theoretical grounds (evidence and argument) for and against truth.