By Schubert Ogden
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Although the ontic and noetic aspects of such a source are rightly said to be interdependent, because each necessarily implies the other, the ontic aspect necessarily implies and so is dependent on only some noetic aspect (even if one presupposing one basic question rather than any other), whereas the noetic aspect necessarily implies and thus depends on just the ontic aspect, i.e., the one and only ontic aspect by which it itself is authorized. Thus the relation between the two aspects, however symmetrical in one respect, is more fundamentally asymmetrical in another, because its ontic aspect is its authorizing aspect, its noetic aspect, its authorized aspect.
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