Once more it must be admitted that the meaning of "private ownership" and "social possession" will vary exceedingly in each age. When private dominion has become exceedingly individual and practically absolute, the opposition between the two terms will necessarily be very sharp. But in those earlier stages of national and social evolution, when the community was still regarded as composed, not of persons, but of groups, the antagonism might be, in point of theory, extremely limited; and in concrete cases it might possibly be difficult to determine where one ended and the other began. Yet it is undeniable that socialism in itself need mean no more than the central principle of State-ownership of capital and land. Such a conception is consistent with much private property in other forms than land and capital, and will be worked out in detail differently by different minds. But it is the principle, the essence of it, which justifies any claims made to the use of the name. We may therefore fairly call those theories socialistic which are covered by this central doctrine, and disregard, as irrelevant to the nature of the term, all added peculiarities contributed by individuals who have joined their forces to the movement.
By socialistic theories of the Middle Ages, therefore, we mean no more than those theories which from time to time came to the surface of political and social speculation in the form of communism, or of some other way of bringing about the transference which we have just indicated. But before plunging into the tanglement of these rather complicated problems, it will make for clearness if we consider quite briefly the philosophic heritage of social teaching to which the Middle Ages succeeded.
The Fathers of the Church had found themselves confronted with difficulties of no mean subtlety. On the one hand, the teaching of the Scriptures forced upon them the religious truth of the essential equality of all human nature. Christianity was a standing protest against the exclusiveness of the Jewish faith, and demanded through the attendance at one altar the recognition of an absolute oneness of all its members. The Epistles of St. Paul, which were the most scientific defence of Christian doctrine, were continually insisting on the fact that for the new faith there was no real division between Greek or barbarian, bond or free. Yet, on the other hand, there were equally unequivocal expressions concerning the reverence and respect due to authority and governance. St. Peter had taught that honour should be paid to Caesar, when Caesar was no other than Nero. St. Paul had as clearly preached subjection to the higher powers. Yet at the same time we know that the Christian truth of the essential equality of the whole human race was by some so construed as to be incompatible with the notion of civil authority. How, then, was this paradox to be explained? If all were equal, what justification would there be for civil authority? If civil authority was to be upheld, wherein lay the meaning of St. Paul's many boasts of the new levelling spirit of the Christian religion? The paradox was further complicated by two other problems. The question of the authority of the Imperial Government was found to be cognate with the questions of the institution of slavery and of private property. Here were three concrete facts on which the Empire seemed to be based. What was to be the Christian attitude towards them?
After many attempted explanations, which were largely personal, and, therefore, may be neglected here, a general agreement was come to by the leading Christian teachers of East and West. This was based on a theological distinction between human nature as it existed on its first creation, and then as it became in the state to which it was reduced after the fall of Adam. Created in original justice, as the phrase ran, the powers of man's soul were in perfect harmony. His sensitive nature, i.e. his passions, were in subjection to his will, his will to his reason, his reason to God. Had man continued in this state of innocence, government, slavery, and private property would never have been required. But Adam fell, and in his fall, said these Christian doctors, the whole conditions of his being were disturbed. The passions broke loose, and by their violence not unfrequently subjected the will to their dictatorship; together with the will they obscured and prejudiced the reason, which under their compulsion was no longer content to follow the Divine Reason or the Eternal Law of God. In a word, where order had previously reigned, a state of lawlessness now set in. Greed, lust for power, the spirit of insubordination, weakness of will, feebleness of mind, ignorance, all swarmed into the soul of man, and disturbed not merely the internal economy of his being, but his relations also to his fellows. The sin of Cain is the social result of this personal upheaval.
Society then felt the evils which attended this new condition of things, and it was driven, according to this patristic idea, to search about for remedies in order to restrain the anarchy which threatened to overwhelm the very existence of the race. Hence was introduced first of all the notion of a civil authority. It was found that without it, to use a phrase which Hobbes indeed has immortalised, but which can be easily paralleled from the writings of St. Ambrose or St. Augustine, "life was nasty, brutish, and short." To this idea of authority, there was quickly added the kindred ideas of private property and slavery. These two were found equally necessary for the well-being of human society. For the family became a determined group in which the patriarch wielded absolute power; his authority could be effective only when it could be employed not only over his own household, but also against other households, and thus in defence of his own. Hence the family must have the exclusive right to certain things. If others objected, the sole arbitrament was an appeal to force, and then the vanquished not only relinquished their claims to the objects in dispute, but became the slaves of those to whom they had previously stood in the position of equality and rivalry.
Thus do the Fathers of the Church justify these three institutions. They are all the result of the Fall, and result from sin. Incidentally it may be added that much of the language in which Hildebrand and others spoke of the civil power as "from the devil" is traceable to this theological concept of the history of its origin, and much of their hard language means no more than this. Private property, therefore, is due to the Fall, and becomes a necessity because of the presence of sin in the world.
But it is not only from the Fathers of the Church that the mediaeval tradition drew its force. For parallel with this patristic explanation came another, which was inherited from the imperial legalists. It was based upon a curious fact in the evolution of Roman law, which must now be shortly described.
For the administration of justice in Rome two officials were chosen, who between them disposed of all the cases in dispute. One, the Praetor Urbanus, concerned himself in all litigation between Roman citizens; the other, the Praetor Peregrinus, had his power limited to those matters only in which foreigners were involved; for the growth of the Roman Imperium had meant the inclusion of many under its suzerainty who could not boast technical citizenship. The Praetor Urbanus was guided in his decisions by the codified law of Rome; but the Praetor Peregrinus was in a very different position. He was left almost entirely to his own resources. Hence it was customary for him, on his assumption of office, to publish a list of the principles by which he intended to settle all the disputes between foreigners that were brought to his court. But on what foundation could his declaratory act be based? He was supposed to have previously consulted the particular laws of as many foreign nations as was possible, and to have selected from among them those which were found to be held in common by a number of tribes. The fact of this consensus to certain laws on the part of different races was supposed to imply that these were fragments of some larger whole, which came eventually to be called indifferently the Law of Nature, or the Law of Nations. For at almost the very date when this Law of Nations was beginning thus to be built up, the Greek notion of one supreme law, which governed the whole race and dated from the lost Golden Age, came to the knowledge of the lawyers of Rome. They proceeded to identify the two really different concepts, and evolved for themselves the final notion of a fundamental rule, essential to all moral action. In time, therefore, this supposed Natural Law, from its venerable antiquity and universal acceptance, acquired an added sanction and actually began to be held in greater respect than even the declared law of Rome. The very name of Nature seemed to bring with it greater dignity. But at the same time it was carefully explained that this Lex Naturae was not absolutely inviolable, for its more accurate description was Lex or Jus Gentium. That is to say, it was not to be considered as a primitive law which lay embedded like first principles in human nature; but that it was what the nations had derived from primitive principles, not by any force of logic, but by the simple evolution of life. The human race had found by experience that the observance of the natural law entailed as a direct consequence the establishment of certain institutions. The authority, therefore, which these could boast was due to nothing more than the simple struggle for existence. Among these institutions were those same three (civil authority, slavery, private property), which the Fathers had come to justify by so different a method of argument. Thus, by the late Roman lawyers private property was upheld on the grounds that it had been found necessary by the human race in its advance along the road of life. To our modern ways of thinking it seems as though they had almost stumbled upon the theory of evolution, the gradual unfolding of social and moral perfection due to the constant pressure of circumstances, and the ultimate survival of what was most fit to survive. It was almost by a principle of natural selection that mankind was supposed to have determined the necessity of civil authority, slavery, private property, and the rest. The pragmatic test of life had been applied and had proved their need.
A third powerful influence in the development of Christian social teaching must be added to the others in order the better to grasp the mental attitude of the mediaeval thinkers. This was the rise and growth of monasticism. Its early history has been obscured by much legendary detail; but there is sufficient evidence to trace it back far into the beginnings of Christianity. Later there had come the stampede into the Thebaid, where both hermit life and the gathering together of many into a community seem to have been equally allowed as methods of asceticism. But by the fifth century, in the East and the West the movement had been effectively organised. First there was the canonical theory of life, introduced by St. Augustine. Then St. Basil and St. Benedict composed their Rules of Life, though St. Benedict disclaimed any idea of being original or of having begun something new. Yet, as a matter of fact, he, even more efficiently than St. Basil, had really introduced a new force into Christendom, and thereby became the undoubted father of Western monasticism.
Now this monasticism had for its primary intention the contemplation of God. In order to attain this object more perfectly, certain subsidiary observances were considered necessary. Their declared purpose was only to make contemplation easier; and they were never looked upon as essential to the monastic profession, but only as helps to its better working. Among these safeguards of monastic peace was included the removal of all anxieties concerning material well-being. Personal poverty—that is, the surrender of all personal claim to things the care of which might break in upon the fixed contemplation of God—was regarded as equally important for this purpose as obedience, chastity, and the continued residence in a certain spot. It had indeed been preached as a counsel of perfection by Christ Himself in His advice to the rich young man, and its significance was now very powerfully set forth by the Benedictine and other monastic establishments.