West; theology is not wedded to invariable formulas. If in the midst of this diversity a mass of beliefs common to all is apparent, is one not justified in seeing in it, not a formulated system, framed by the representatives of pedantic authority, but faith itself in its surest instinct and its most spontaneous manifestation? If the same unanimity which is revealed in essential points of belief is found also in rejecting certain tendencies, are we not justified in concluding that these tendencies were in flagrant opposition to the fundamental principles of Christianity? And will not this presumption be transformed into certainty if we recognize in the doctrine universally rejected by the Church the characteristic features of one of the religions of the past?

To say that Gnosticism or ebionitism are legitimate forms of