II. But nevertheless much had happened in the interval of 130 years that divides them and this leads us to consider the limits which the state of the Church, as well as Gregory's own originality and more extended physical knowledge, placed upon the complete filling in of the outlines sketched by the master. First and chiefly, Origen's doctrine of the pre-existence of the soul could not be retained; and we know that Gregory not only abandoned it, but attacked it with all his powers of logic in his treatise, De Animâ et Resurrectione: for which he receives the applause of the Emperor Justinian. Souls, according to Origen, had pre-existed from eternity: they were created certainly, but there never was a time when they did not exist: so that the procession even of the Holy Spirit could in thought only be prior to their existence. Then a failure of their free wills to grasp the true good, and a consequent cooling of the fire of love within them, plunged them in this material bodily existence, which their own sin made a suffering one. This view had certainly great merits: it absolved the Deity from being the author of evil, and so was a théodicée;' it entirely got rid of the two rival principles, good and evil, of the Gnostics; and it avoided the seeming incongruity of what was to last for ever in the future being not eternal in the past. Why then was it rejected? Not only because of the objection urged by Methodius, that the addition of a body would be no remedy but rather an increase of the sin; or that urged amongst many others by Gregory, that a vice cannot be regarded as the precursor of the birth of each human soul into this or into other worlds; but more than that and chiefly, because such a doctrine contravened the more distinct views now growing up as to what the Christian creation was, and the more careful definitions also of the Trinity now embodied in the creeds. In fact the pre-existence of the soul was wrapped up in a cosmogony that could no longer approve itself to the Christian consciousness. In asserting the freedom of the will, and placing in the will the cause of evil, Origen had so far banished emanationism; but in his view of the eternity of the world, and in that of the eternal pre-existence of souls which accompanied it, he had not altogether stamped it out. He connects rational natures so closely with the Deity that each individual logos seems almost, in a Platonic way, to lie in the Divine which [26] he styles ousia ousion, idea ideon. They are partial brightnesses (apaugasmapa) of the glory of God.' He [27] allows them, of course, to have been created in the Scriptural sense of that word, which is certainly an advance upon Justin; but his creation is not that distinct event in time which Christianity requires and the exacter treatment of the nature of the Divine Persons had now developed. His creation, both the intelligible and visible world, receives from him an eternity which is unnatural and incongruous in relation to his other speculations and beliefs: it lingers, Tithonus-like, in the presence of the Divine Persons, without any meaning and purpose for its life; it is the last relic of Paganism, as it were, in a system which is otherwise Christian to the very core. His strenuous effort to banish all ideas of time, at all events from the intelligible world, ended in this eternal creation of that world; which seemed to join the eternally generated Son too closely to it, and gave occasion to the Arians to say that He too was a ktisma. This eternal pre-existence in fact almost destroyed the idea of creation, and made the Deity in a way dependent on His own world. Athanasius, therefore, and his followers were roused to separate the divinity of the Son from everything created. The relation of the world to God could no longer be explained in the same terms as those which they employed to illustrate the relations between the Divine Persons; and when once the doctrine of the consubstantiality of the Father and Son had been accepted and firmly established there could be no more favour shown by the defenders of that doctrine to the merely Platonic view of the nature and origin of souls and of matter.
Amongst the defenders of the Creed of Nicæa, Gregory, we know, stands well-nigh foremost. In his long and numerous treatises on the Trinity he employs every possible argument and illustration to show the contents of the substance of the Deity as transcendent, incommunicable to creation per se. Souls cannot have the attributes of Deity. Created spirits cannot claim immediate kindred with the Logos. So instead of the Platonic antithesis of the intelligible and sensible world, which Origen adopted, making all equal in the intelligible world, he brings forward the antithesis of God and the world. He felt too that that antithesis answers more fully not only to the needs of the Faith in the Trinity daily growing more exact and clear, but also to the facts of the Creation, i.e. its variety and differences. He gives up the preexistence of the rational soul; it will not explain the infinite variety observable in souls. The variety, again, of the material world, full as it is of the miracles of divine power, cannot have been the result of the chance acts of created natures embodying themselves therein, which the theory of pre-existence supposes. God and the created world (of spirits and matter) are now to be the factors in theology; although Gregory does now and then, for mere purposes of illustration, divide the Universe still into the intelligible and the sensible.
When once pre-existence was given up, the parts of the soul could be more closely united to each other, because the lower and higher were in their beginning no longer separated by a gulf of ages. Accordingly Gregory, reducing the three parts of man which Origen had used to the simpler division into visible and invisible (sensible and intelligible), dwells much upon the intimate relation between the two and the mutual action of one upon the other. Origen had retained the trichotomy of Plato which other Greek Fathers also, with the sanction, as they supposed, of S. Paul (1 Thess. v. 23), had adopted. Body,' soul,' and spirit,' or Plato's body,' unreasoning' and reasoning soul,' had helped Origen to explain how the last, the pre-existent soul (the spirit, or the conscience [28] , as he sometimes calls it) could ever have come to live in the flesh. The second, the soul proper, is as it were a mediating ground on which the spirit can meet the flesh. The celestial mind, the real man fallen from on high,' rules by the power of conscience or of will over this soul, where the merely animal functions and the natural appetites reside; and through this soul over the body. How the celestial mind can act at all upon this purely animal soul which lies between it and the body, Origen leaves unexplained. But this division was necessary for him, in order to represent the spirit as remaining itself unchanged in its heavenly nature, though weakened by its long captivity in the body. The middle soul (in which he sometimes places the will) is the scene of contamination and disorder; the spirit is free, it can always rejoice at what is well done in the soul, and yet is not touched by the evil in it; it chooses, convicts, and punishes. Such was Origen's psychology. But an intimate connexion both in birth and growth between all the faculties of man is one of Gregory's most characteristic thoughts, and he gave up this trichotomy, which was still, however, retained by some Greek fathers, and adopted the simpler division mentioned above in order more clearly and concisely to show the mutual play of spirit and body upon each other. There was soon, too, another reason why this trichotomy should be suspected. It was a second time made the vehicle of error. Apollinaris adopted it, in order to expound that the Divine Logos took the place, in the tripartite soul of Christ, of the reasonable soul' or spirit of other men. Gregory, in pressing for a simpler treatment of man's nature, thus snatched a vantage-ground from a sagacious enemy. His own psychology is only one instance of a tendency which runs through the whole of his system, and which may indeed be called the dominating thought with which he approached every question; he views each in the light of form and matter; spirit penetrating and controlling body, body answering to spirit and yet at the same time supplying the nutriment upon which the vigour and efficacy of spirit, in this world at least, depends. This thought underlies his view of the material universe and of Holy Scripture, as well as of man's nature. With regard to the last he says, the intelligible cannot be realized in body at all, except it be commingled with sensation;' and again, as there can be no sensation without a material substance, so there can be no exercise of the power of thought without sensation [29] .' The spiritual or intelligent part of man (which he calls by various names, such as the inner man,' the psuche logike, nous or dianoia, to zoopoion aition, or simply psuche as throughout the treatise On the Soul), however alien in its essence from the bodily and sentient part, yet no sooner is united with this earthly part than it at once exerts power over it. In fact it requires this instrument before it can reach its perfection. Seeing, then, man is a reasoning animal of a certain kind, it was necessary that the body should be prepared as an instrument appropriate to the needs of his reason [30] .' So closely has this reason been united with the senses and the flesh that it performs itself the functions of the animal part; it is the mind' or reason' itself that sees, hears, &c.; in fact the exercise of mind depends on a sound state of the senses and other organs of the body; for a sick body cannot receive the artistic' impressions of the mind and, so, the mind remains inoperative. This is enough to show how far Gregory had got from pre-existence and the fall into the prison of the flesh.'
His own theory of the origin of the soul, or at least that to which he visibly inclines, is stated in the treatise, De Animâ et Resurrectione, p. 241. It is that of Tertullian and some Greek Fathers also: and goes by the name of traducianism.' The soul is transmitted in the generating seed. This of course is the opposite pole to Origen's teaching, and is inconsistent with Gregory's own spiritualism. The other alternative, Creationism, which a number of the orthodox adopted, namely that souls are created by God at the moment of conception, or when the body of the foetus is already formed, was not open to him to adopt; because, according to him, in idea the world of spirits was made, and in a determinate number, along with the world of unformed matter by the one creative act in the beginning.' In the plan of the universe, though not in reality as with Origen, all souls are already created. So the life of humanity contains them: when the occasion comes they take their beginning along with the body which enshrines them, but are not created then any more than that body. Such was the compromise between spiritualism and materialism to which Gregory was driven by the difficulties of the subject. Origen with his eye unfalteringly fixed upon the ideal world, and unconscious of the practical consequences that might be drawn from his teaching, cut the knot with his eternal pre-existence of souls, which avoided at once the alleged absurdity of creationism and the grossness of traducianism. But the Church, for higher interests still than those of pure idealism, had to reject that doctrine; and Gregory, with his extended knowledge in physic and his close observation of the intercommunion of mind and body, had to devise or rather select a theory which, though a makeshift, would not contradict either his knowledge or his faith.
Yet after admitting that soul and body are born together and attaching such importance to the physical basis' of life and thought, the influence of his master, or else his own uncontrollable idealism, carries him away again in the opposite direction. After reading words in his treatise which Locke might have written we come upon others which are exactly the teaching of Berkeley. There is a passage in the De Animâ et Resurrectione where he deals with the question how an intelligent Being could have created matter, which is neither intelligent or intelligible. But what if matter is only a concourse of qualities, ennoiai, or psila noemata as he elsewhere calls them? Then there would be no difficulty in understanding the manner of creation. But even about this we can say so much, i.e. that not one of those things which we attribute to body is itself body: neither figure, nor colour, nor weight, nor extension, nor quantity, nor any other qualifying notion whatever: but every one of them is a thought: it is the combination of them all into a single whole that constitutes body. Seeing, then, that these several qualifications which complete the particular body are grasped by thought alone, and not by sense, and that the Deity is a thinking being, what trouble can it be to such a thinking agent to produce the thoughts whose mutual combination generate for us the substance of that body? and in the treatise, De Hom. Opif., c. 24, the intelligible phusis is said to produce the intelligible dunameis, and the concourse of these dunameis brings into being the material nature. The body itself, he repeats (contra Fatum, p. 67), is not a real substance; it is a soulless, unsubstantial thing. The only real creation is that of spirits. Even Origen did not go so far as that Matter with him, though it exists by concomitance and not by itself, nevertheless really exists. He avoided a rock upon which Gregory runs; for with Gregory not only matter but created spirit as well vanish in idealism. There remain with him only the nooumena and God.