The deep meditation which seems to have been exercised by the Fathers on points of doctrine, the disputes and turbulence yet lucid determination which characterize the Councils, the indecision of Popes, are all in different ways, at least when viewed together, portions and indications of the same process. The theology of the Church is no random combination of various opinions, but a diligent, patient working out of one doctrine from many materials. The conduct of Popes, Councils, Fathers, betokens the slow, painful, anxious taking up of new truths into an existing body of belief. St. Athanasius, St. Augustine, St. Leo are conspicuous for the repetition _in terminis_ of their own theological statements; on the contrary, it has been observed of the heterodox Tertullian, that his works "indicate no ordinary fertility of mind in that he so little repeats himself or recurs to favourite thoughts, as is frequently the case even with the great St. Augustine."[366:2] 11. Here we see the difference between originality of mind and the gift and calling of a Doctor in the Church; the holy Fathers just mentioned were intently fixing their minds on what they taught, grasping it more and more closely, viewing it on various sides, trying its consistency, weighing their own separate expressions. And thus if in some cases they were even left in ignorance, the next generation of teachers completed their work, for the same unwearied anxious process of thought went on. St. Gregory Nyssen finishes the investigations of St. Athanasius; St. Leo guards the polemical statements of St. Cyril. Clement may hold a purgatory, yet tend to consider all punishment purgatorial; St. Cyprian may hold the unsanctified state of heretics, but include in his doctrine a denial of their baptism; St. Hippolytus may believe in the personal existence of the Word from eternity, yet speak confusedly on the eternity of His Sonship; the Council of Antioch might put aside the Homoüsion, and the Council of Nicæa impose it; St. Hilary may believe in a purgatory, yet confine it to the day of judgment; St. Athanasius and other Fathers may treat with almost supernatural exactness the doctrine of our Lord's incarnation, yet imply, as far as words go, that He was ignorant viewed in His human nature; the Athanasian Creed may admit the illustration of soul and body, and later Fathers may discountenance it; St. Augustine might first be opposed to the employment of force in religion, and then acquiesce in it. Prayers for the faithful departed may be found in the early liturgies, yet with an indistinctness which included the Blessed Virgin and the Martyrs in the same rank with the imperfect Christian whose sins were as yet unexpiated; and succeeding times might keep what was exact, and supply what was deficient. Aristotle might be reprobated by certain early Fathers, yet furnish the phraseology for theological definitions afterwards. And in a different subject-matter, St.