Aristotle nor Kant meet the irreducible difference between fact and value at the epistemological level. That which is universal and therefore logically valid is to them also real. We can say that, with slight modification, of all non-revelational philosophy. That which seems valid for the finite consciousness, that is, that which falls within its categories, is real and only that is real. What philosophy can never give us as Christians is that we experience the very suppositions of experience through