Is there such a thing as modern monophysitism? To this question the preceding paragraph supplies the answer, "There must be." Heretical tendencies will be found in the Christian community in every generation, and the religious thought of individual Christians will pass through heretical phases. Such heresy is rather an intellectual than a moral fault; but the possibility of being the heirs, without knowing it, of the opinions of Nestorius and Eutyches throws on thinkers to-day the responsibility of examining their Christological beliefs and of testing them by the canon of orthodoxy. Not a few leaders of religious thought, in intention orthodox, in fact remain monophysites, through inability to analyse their beliefs or through a false sense of security, founded on the opinion that the age of heresy is past. It is commonly supposed that belief in the deity of Christ constitutes Christianity. That supposition is wrong. Arius was not the only heresiarch. To transcend the Arian standpoint is only the first step in the long discipline of faith. There are other heresies, other half-truths scarcely less pernicious than the Arian. The recognition of Christ as God represents a great intellectual and moral advance, and is the first essential step in religion; but to rest content with the taking of that step is to remain on the lowest rung of the ladder of faith. It is little use to form a lofty conception of Christ, if in doing so we insulate Him from the world of things and souls. That is what monophysitism does, and because disguised monophysitism is prevalent in the church to-day, Christianity's grip is weak and the fire of devotion low. We may picture faith as a battlefield. Doubt is the enemy entrenched in depth. Arianism holds the first line of trenches. Echeloned behind Arianism are the other heresies in a network of fortified redoubts, strong points and support trenches. The church militant must make the furthest line her objective. If her advance stays at an intermediate point, she is exposed to cross-fire from the support trenches of the subsidiary heresies. The ground gained by the first assault proves untenable. The position won can only be secured by pushing home the attack to the final objective and consolidating her line there in the might of full catholic doctrine.