There can be no question but that this poetry had an effect none the less far reaching because its influence was difficult to estimate and analyse. It was not necessary for the psychological result that men should actually believe in these myths; much was gained if they allowed their thoughts to dwell on the ideas presented in them. It was the sedimentary deposit thus formed which was to fertilise the soil of patriotism which had grown so barren in the civil wars. But while Augustus was broad-minded enough to realise the value of the influence of literature, he did not fail to recognise that men could not live by myths alone, that they must be surrounded by visible cult acts and tangible temples of the gods in order that their faith might be aided by sight and their life filled with action. Literature was to encourage patriotism, and patriotism was the foundation for the spiritual restoration of the state religion, but the state itself must by legal enactment prepare the outward form which the religious activity was to take. The question of the sincerity of Augustus in these religious reforms is a very difficult one to answer. If the essence of religion consisted in acts and not in belief, in works and not in faith, Augustus was a devoutly religious man. Beyond that we cannot go, for our judgment is hampered not only by ignorance of the facts but by our inability to free ourselves from the modern standpoint in the interpretation of the few facts that we do know. There can be no question of the emperor's fitness for the task so far as priestly learning went, for he was from a very early age a member of three priesthoods: a pontiff, an augur, and a guardian of the Sibylline books. With characteristic modesty however he refrained from becoming Chief Pontiff until in B.C. 12 the death of Lepidus, the discarded member of the Second Triumvirate, left the position vacant.

One who understands the political reforms of Augustus will have no difficulty in understanding his reorganisation of religion, for they were both undertaken with the same general underlying principles and along similar lines. In both cases innovations and novelties were strenuously avoided, except of course those of a merely administrative character. In each case a successful effort was made to have it appear as if the old institutions of the republic were being reinstated, whereas as a matter of fact the form alone was old with its age artificially emphasised occasionally by an archaistic touch, while the content was quite new. The real result in each case was the strengthening of the monarchy and the emphasising of the divine right of the Julian house. In our study of Augustus's restoration of religion we must not be content therefore with chronicling the old forms which were re-established, but we must examine in each case the new content which was put into them, even though the evidence of that content consists oftentimes of a mere tendency. The fondness of Augustus for the archaic is nowhere more clearly exhibited than in one of his earliest religious acts: the formal declaration of war against Antony and Cleopatra, in B.C. 32, by means of the Fetiales. The Fetiales were a very ancient priestly college which acted, under the direction of the Senate, as the representatives of international law. It was through them that all treaties and all declarations of war had been made, but it seems probable that this custom had fallen into desuetude after the Punic wars, and that accordingly the college had lapsed into insignificance, if it had not died out altogether. But now as the first step in the rebuilding of the priesthoods Octavian restored the college to its old rank and gained also the additional advantage that the people were impressed with the moral righteousness of their cause against Antony and Cleopatra, and also with the fact that it was a foreign, i.e. an international war, and not a civil one, in which they were about to engage. The effect of Octavian's restoration was a lasting one, for from this time on this priesthood was held in high honour during the whole of the empire, and the emperors themselves were members of it.

This was a very characteristic beginning to Augustus's activity. It was primarily the human element to which he was appealing in his religious changes, and hence the priesthoods needed especial attention. It was not long after the battle of Actium that he restored another very ancient priesthood, that of the Arval brothers. This was a very old priesthood consisting of twelve men who took part in the purification of the land, the Ambarvalia, so called because the ceremony consisted of a solemn procession around the boundaries of the fields. But as the Roman territory grew and such a ceremony in the old fashion became impossible and was carried out merely symbolically by sacrifices at various boundary points, the Arval brothers lost all their importance, so that even in these symbolic sacrifices their place was taken by the pontiffs. Augustus however recognised in this priesthood an effectual means of emphasising the agricultural side of Roman life, and of connecting the imperial family with the farming population. The centre of this new worship was the sanctuary in the sacred grove at the fifth milestone of the Via Campana, and it is there that the wonderful discoveries have been made of the inscriptions giving the "minutes" of the meetings of this curious corporation, beginning with Augustus. But the pastoral side of their worship was an insignificant matter, even in the age of Augustus, compared with their prayers and supplications in behalf of the imperial house, so that the records of this supposedly agricultural priesthood form one of our best sources for the study of emperor-worship.

Three other priesthoods, the pontiffs, the augurs, and the guardians of the Sibylline books (XVviri) did not need actual restoration, for their ability to interfere in politics had kept them alive during the closing centuries of the republic, when political usefulness was the surest means of surviving in the struggle for existence. But the fact that they had been politically powerful made the control of them all the more necessary for an emperor who wished to have in his hands all the possibilities of political influence. It was contrary to Augustus's policy openly to crush any of the institutions which had really been or, what was from his standpoint very much the same thing, had been thought to be a bulwark of republicanism. As a matter of fact however these priesthoods had been one of the chief means of bringing the republic into the control of one man. Hence for Augustus the problem was easy to solve; it was only necessary to appear to honour these priesthoods by raising their dignity still higher and by making only men of senatorial rank eligible, and then to take the chief position in them himself and to fill them with his own supporters. Thus the republic was apparently saved and the empire was really strengthened.

But the priesthood to which Augustus devoted his most especial attention was the priesthood of Vesta, the Vestal virgins. Here he was guided not only by his desire to improve the condition of the priesthoods in general but also by his especial interest in the cult of Vesta. The reasons for this interest in Vesta will be explained in a moment when we discuss the emperor's favourite cults; but a word about its effects on the priestesses of Vesta may be said here. The Vestal virgins had been relatively little contaminated by politics, but the priesthood had suffered along with all the rest of the religion of the state because of the general indifferentism and neglect of religious things which characterised the closing centuries of the republic. The best families in the state were not as ready as in the earlier days to devote their daughters to the service, and thus the rank and consequently the influence of the Vestals had to some extent declined. But now all this was immediately changed, the outward honour and the insignia of the Vestals were increased until they were allowed such privileges as not even the emperors possessed. When they went through the street, they were attended by a lictor as the higher officers of the state were, and they were given special seats at the theatre. But the most characteristic thing which Augustus did for them and that which helped their cause the most was the emperor's declaration, made to be repeated in public gossip, that if he had a grand-daughter of the proper age he would unhesitatingly make her a Vestal virgin.

Toward the close of his life Augustus prepared a statement of what he had accomplished during his reign, a sort of compte rendu of his stewardship. In a roundabout way almost all of this has been preserved to us and it naturally forms the greatest source of our knowledge of his activity. After reciting a large number of his religious reforms he adds:—"The spoils of war I have consecrated to the gods in the Capitoline temple, in the temple of the god Julius, in the temple of Apollo, in the temple of Vesta, in the temple of Mars the Avenger." These words give us a clue to the more especial religious interests of Augustus, a clue which is all the more needed because of his apparently catholic spirit, and his seemingly general interest in all the forms of old Roman religion. No man who restored and in some cases entirely rebuilt eighty-two temples to various deities could be accused of undue partiality in emphasising certain phases of religion to the total exclusion of others. But as a matter of fact underneath this general interest there were present certain very specific interests, and this passage in his own writing adds great strength to the other evidence as to what these gods were. Naturally in every list of pre-eminent deities Juppiter must be present, hence the mention of the Capitoline temple first; as a matter of fact however Augustus's worship of Juppiter was much more a matter of form than of real interest. His attitude was one of graceful acceptance of the inevitable rather than of enthusiastic homage. Juppiter was not adapted to his purpose, because it was almost impossible to connect Juppiter with a specific form of government other than the republic, much less with a particular royal family like the Julian house. Juppiter had come to mean republicanism. The Capitoline temple had ushered in the republic in B.C. 509 and there was a halo of republicanism about it which was too genuine to be used as a mask for concealing imperial features. With the four other deities matters stood very differently. The god Julius, Apollo, Vesta, and Mars the Avenger were either already identical with the imperial family or could easily be connected with it.

The central feature of the religion of the empire was a thing altogether unique and unknown in the republic: the worship of the emperors as gods. From Augustus on this was the chief characteristic of the state religion; its beginnings must be sought therefore under his reign and he is largely accountable for it. According to our modern ideas it seems a very strange thing to worship a living man as a god; it seems also strange to worship a dead man as a god, but there we have at least the analogy of the worship of the saints, and the inherent instinct of the race toward ancestor-worship which unexpectedly crops out in all of us at intervals. But we must rid ourselves of modern ideas and try to appreciate the historical evolution of emperor-worship. This evolution is perfectly clear and we can trace every step of it, though in doing so we must remember that the various processes which we are compelled to take up one after another in our explanation went on in nature side by side, and exercised a sympathetic influence one upon the other, which we have to eliminate from our explanation but make allowance for in our finished concept.

We have seen that from the very beginning of religious life in Rome the idea was present that everything, each individual and each family, had its divine double, the individual in the shape of his Genius, the family in the shape of protecting spirits, Vesta, the Penates, and later the Lar. In addition to this, under the influence of the Greek myths which various families adopted, certain gods originally independent became especially associated with these families. Each family was naturally interested in the worship of its own gods, but this particular worship was quite as naturally confined to the particular family or its dependents. Now the first preliminary step toward emperor-worship was taken when the gods of the imperial family began to be worshipped by other families, then by all other families, and officially by the state. But from the very beginning the gods of each family had included also the deified ancestors, the Di Manes, at first thought of en masse and not as individuals, but toward the close of the republic they began to be individualised, so that the next step in emperor-worship was when the dead Julius, a particular ancestor therefore of Augustus, began to be worshipped by the whole people and officially by the state. But also from the beginning there had been still another element in family worship, the cult paid to the Genius or divine double of the living master of the house. There followed then correspondingly as another step toward emperor-worship, the homage paid by the whole state to the Genius of the living emperor. These three steps: the worship by the whole state of the gods of the emperor's family, in its three forms, the gods of the family in general, and in particular the deified ancestor, and the Genius of the living representative, were all encouraged and officially established by Augustus. Lastly there came from the Orient a habit of thought in distinct contradiction to Roman ideas whereby not the Genius of the living emperor but the very man himself was divine in life and in death. Augustus fought against this concept but had to yield to it and allow himself to be worshipped directly as a god in the Orient itself and in certain coast towns of Italy which were under strong Oriental influence, but he forbade it in Rome, and thus established a precedent which was followed by all the better ones among the emperors who came after him.

This digression was necessary in order that we might appreciate the reasons for Augustus's preferences in emphasising certain cults. Unquestionably he did not foresee or plan for an emperor-worship such as eventually grew up out of his arrangements; he was however deeply interested in emphasising the worship of the special deities of his own family. The four gods therefore whose names he couples with that of Juppiter in the summary of his religious activity—Apollo, Vesta, Mars the Avenger, and the god Julius—are all intimately connected with his family; and if we add to this the worship of his own Genius, the Genius Augusti, we shall have the real kernel of his religious restoration. It remains for us to see in what way these deities are connected with his family, and how he managed to emphasise their cult and at the same time to bring them into close relationship to himself.

From the time of his first introduction into Rome Apollo had stood in a relation of contrast to Juppiter. Apollo's oracles, the Sibylline books, had brought in a host of Greek gods whose presence tended inevitably to lessen the unique position and the unparalleled prestige of Juppiter Optimus Maximus, the great representative of nationalism in Roman religion. At first this contrast was scarcely marked, and the very oracles of Apollo which were destined to undermine Juppiter's omnipotence were stored in Juppiter's temple and under his protection. The difference was felt more strongly as the priesthood of the Sibylline books began to grow in influence alongside of the pontiffs, the priests of the Juppiter cults. This opposition was emphasised in B.C. 367, when the priesthood of the oracles was opened to the plebeians, while the pontiffs were still patricians. At first unquestionably the object of the patricians was to keep for themselves the more sacred and the then more important college and to open the lesser priesthood to the plebeians. But in the struggle of the two orders those things which were opened to the plebeians grew in importance and entirely overshadowed those which were so scrupulously hedged about, and the elements which strove to resist progress were crushed beneath it; and just as the old assembly, the Comitia Curiata, which the patricians had kept for themselves, was later of no account compared with the Comitia Centuriata, which belonged to both orders, so the college of pontiffs lost significance while the keepers of the oracles gained steadily in power and influence. But it was not merely because Apollo was the great leader of the Greek movement in Roman religion that Augustus chose to honour him. A far more important consideration guided him, for Apollo was especially attached to the Julian house in all its mythical and historical fortunes. The first great public evidence of Apollo's favour in Augustus's career was at the battle of Actium; but while this led to the first proclamation of the emperor's devotion to Apollo, it was not Actium which made him a worshipper of the god, but it was because he was a worshipper of Apollo from the beginning that Actium and all subsequent tokens of the god's favour were emphasised by him. However much or little the people of the day may have known about Apollo's previous relations to the Julian family, the legend of his assistance at Actium, and the immortalisation of that legend in the great temple on the Palatine were proofs enough. The moral effect of the Palatine temple cannot be overestimated, especially when we realise one fact, which is often neglected, that this temple gained infinitely in significance because it was on private ground, attached to the emperor's own private house, for we must not forget that the Palatine was only in process of transition into the imperial residence, and though the house of Augustus, when he left it, was the palace, during his lifetime it was merely his private residence. The temple of Apollo was therefore in its origin theoretically the private chapel of a Roman family rather than the seat of a state cult. It was the Apollo of the Julian house who was being worshipped there. And yet it was far more than a private worship, for it began very soon to be a cult centre in distinct rivalry to Juppiter Optimus Maximus on the Capitoline. The oracles of the Sibyl, even though they were the words of Apollo, had never been preserved in the old temple of Apollo on the Flaminian meadow, but instead they had always been in the custody of Juppiter on the Capitoline. But now these oracles, after being carefully revised by the emperor, were deposited in the new Palatine temple, and by this act the centre of all the Greek cults in Rome was transferred from Juppiter to Apollo, from the Capitoline to the Palatine, and the rivalry between the two was publicly declared. The temple was dedicated in B.C. 28 and Augustus allowed its influence to permeate the Roman people for more than a decade before he took the next step, a step which was virtually to parallel Apollo and his sister Artemis-Diana with Juppiter and Juno.