Their narrow outlook on life, their religious zeal and their rationalist philosophy combined to produce in them sectarianism of an extreme type. Party spirit ran high among them. They fought the catholics; they fought the Nestorians; they fought one another. The list of schisms that occurred in their communion is of amazing length. The letters of Severus of Antioch make sad reading. They show us that the patriarch had constantly to interfere in cases of disputed succession to bishoprics. At almost every vacancy in the provincial dioceses there were parties formed each with their own nominee, ready to schismatise if they could not secure recognition and consecration for him. It is evident that monophysitism does not foster the generous, tolerant, humane virtues of Christianity. It is the creed of monks, mystics, and intellectualists. [1] E. W. Brooks, "Select Letters of Severus of Antioch," vol. ii. pp. 88, 89. CHAPTER V MONOPHYSITISM AND MODERN PSYCHOLOGY Christology divorced from empirical psychology is a barren science. Abstract discussions about person, nature and union of natures soon degenerate into logomachies. If personality is a psychic entity, and nature another distinct psychic entity, then the question at issue between diphysite and monophysite is worth debating. If they are concepts merely, the debate is hollow and of purely academic interest. A study of psychology clothes the dry bones with flesh. It puts life and meaning into these abstractions. It shows that they represent entities, that something corresponding to the terms "person" and "nature" is actually part of the being of every man, and that therefore their existence in Christ is a proper and practical subject for investigation. In so doing psychology provides the _rationale_ of the Christological controversies. It justifies the church in her determined adherence to the precise expression of the truth. No Christian with powers of introspection, who can distinguish in his own being personality and nature, can be indifferent to the Christological problem. The problem is one of fact, not theory. The terms and the formula are only of importance as expressing or failing to express the true facts of Christ's being. In a word, the psychology of the central figure of human history is the matter at issue.