to knowledge, but to all connected experience, is the knowing, experiencing, thinking, acting self. It is that which says 'I,' the ego, the permanent subject. But that is not enough. The knowing self demands in turn a knowable world. It must have something outside of itself to which it yet stands related, the object of knowledge. Knowledge is the combination of those two, the result of their cooperation. Kant proposed that we may indeed say that we know an object of belief. Yet we must make clear to ourselves that we know it in a different sense from that in which we know physical fact. Faith, since it does not spring from the pure reason, cannot be demonstrated by the reason. Equally it cannot, as skepticism has declared, be overthrown by the pure reason.