If we keep this definition steadily in mind, I think we shall find it a valuable guide in following out what I call the religious experience of the Roman people; and at the present moment it will help me to explain my plan in drawing up these lectures. To begin with, in the prehistoric age of Rome, so far as we can discern from survivals of a later age, the feeling or desire must have taken shape, ineffectively indeed, in many quaint acts, some of them magical or quasi-magical, and possibly taken over from an earlier and ruder population among whom the Latins settled. Many of these continued, doubtless, to exist among the common folk, unauthorised by any constituted power, while some few were absorbed into the religious practice of the State, probably with the speedy loss of their original significance. Such survivals of ineffective religion are of course to be found in the lowest stratum of the religious ideas of every people, ancient and modern; even among the Israelites,[9] and in the rites of Islam or Christianity. They form, as it were, a kind of protoplasm of religious vitality, from which an organic growth was gradually developed. But though they are necessarily a matter of investigation as survivals which have a story to tell, they do not carry us very far when we are tracing the religious experience of a people, and in any case the process of investigating them is one of groping in the dark. I shall deal with these survivals in my next two lectures, and then leave them for good.

I am more immediately concerned with the desire expressed in our definition when it has become more effective; and this we find in the Latins when they have attained to a complete settlement on the land, and are well on in the agricultural stage of social development. This stage we can dimly see reflected in the life of the home and farm of later times; we have, I need hardly say, no contemporary evidence of it, though archaeology may yet yield us something. But the conservatism of rural life is a familiar fact, and comes home to me when I reflect that in my own English village the main features of work and worship remained the same through many centuries, until we were revolutionised by the enclosure of the parish and the coming of the railroad in the middle of the nineteenth century. The intense conservatism of rural Italy, up to the present day, has always been an acknowledged fact, and admits of easy explanation. We may be sure that the Latin farmer, before the City-state was developed, was like his descendants of historical times, the religious head of a family, whose household deities were effectively worshipped by a regular and orderly procedure, whose dead were cared for in like manner, and whose land and stock were protected from malignant spirits by a boundary made sacred by yearly rites of sacrifice and prayer. Doubtless these wild spirits beyond his boundaries were a constant source of anxiety to him; doubtless charms and spells and other survivals from the earlier stage were in use to keep them from mischief; but these tend to become exceptions in an orderly life of agricultural routine which we may call religious. Spirits may accept domicile within the limits of the farm, and tend, as always in this agricultural stage, to become fixed to the soil and to take more definite shape as in some sense deities. This stage--that of the agricultural family--is the foundation of Roman civilised life, in religious as in all other aspects, and it will form the subject of my fourth lecture.

The growing effectiveness of the desire, as seen in the family and in the agricultural stage, prepares us for still greater effectiveness in the higher form of civilisation which we know as that of the City-state. That desire, let me say once more, is to be in right relations with the Power manifesting itself in the universe. It is only in the higher stages of civilisation that this desire can really become effective; social organisation, as I shall show, produces an increased knowledge of the nature of the Power, and with it a systematisation of the means deemed necessary to secure the right relations. The City-state, the peculiar form in which Greek and Italian social and political life eventually blossomed and fructified, was admirably fitted to secure this effectiveness. It was, of course, an intensely local system; and the result was, first, that the Power is localised in certain spots and propitiated by certain forms of cult within the city wall, thus bringing the divine into closest touch with the human population and its interests; and secondly, that the concentration of intelligence and will-power within a small space might, and did at Rome, develop a very elaborate system for securing the right relations--in other words, it produced a religious system as highly ritualistic as that of the Jews.

With the several aspects of this system my fifth and succeeding lectures will be occupied. I shall deal first with the religious calendar of the earliest historical form of the City-state, which most fortunately has come down to us entire. I shall devote two lectures to the early Roman ideas of divinity, and the character of their deities as reflected in the calendar, and as further explained by Roman and Greek writers of the literary age. Two other lectures will discuss the ritual of sacrifice and prayer, with the priests in charge of these ceremonies, and the ritual of vows and of "purification." In each of these I shall try to point out wherein the weakness of this religious system lay--viz. in attempts at effectiveness so elaborate that they overshot their mark, in a misconception of the means necessary to secure the right relations, and in a failure to grow in knowledge of the Power itself.

Lastly, as the City-state advances socially and politically, in trade and commerce, in alliance and conquest, we shall find that the ideas of other peoples about the Power, and their methods of propitiation, begin to be adopted in addition to the native stock. The first stages of this revolution will bring us to the conclusion of my present course; but we shall be then well prepared for what follows. For later on we shall find the Romans feeling afresh the desire to be in right relation with the Power, discovering that their own highly formalised system is no longer equal to the work demanded of it, and pitiably mistaking their true course in seeking a remedy. Their knowledge of the Divine, always narrow and limited, becomes by degrees blurred and obscured, and their sight begins to fail them. I hope in due course to explain this, and to give you some idea of the sadness of their religious experience before the advent of an age of philosophy, of theological syncretism, and of the worship of the rulers of the state.

Let us now turn for a few minutes to the special difficulties of our subject. These are serious enough; but they have been wonderfully and happily reduced since I began to be interested in the Roman religion some twenty-five years ago. There were then only two really valuable books which dealt with the whole subject. Though I could avail myself of many treatises, good and bad, on particular aspects of it, some few of which still survive, the only two comprehensive and illuminating books were Preller's Roemische Mythologie, and Marquardt's volume on the cult in his Staatsverwaltung. Both of these were then already many years old, but they had just been re-edited by two eminent scholars thoroughly well equipped for the task--Preller's work by H. Jordan, and Marquardt's by Georg Wissowa. They were written from different points of view; Preller dealt with the deities and the ideas about them rather than with the cults and the priests concerned with them; while Marquardt treated the subject as a part of the administration of government, dealing with the worship and the ius divinum, and claiming that this was the only safe and true way of arriving at the ideas underlying that law and worship.[10] Both books are still indispensable for the student; but Marquardt's is the safer guide, as dealing with facts to the exclusion of fancies. The two taken together had collected and sifted the evidence so far as it was then available.

The Corpus Inscriptionum had not at that time got very far, but its first volume, edited by Mommsen, contained the ancient Fasti, which supply us with the religious calendar of early Rome, and with other matter throwing light upon it. This first volume was an invaluable help, and formed the basis (in a second edition) of the book I was eventually able to write on the Roman Festivals of the Period of the Republic. At that time, too, in the 'eighties, Roscher's Lexicon of Greek and Roman Mythology began to appear, which aimed at summing up all that was then known about the deities of both peoples; this is not even yet completed, and many of the earlier articles seem now almost antiquated, as propounding theories which have not met with general acceptance. All these earlier articles are now being superseded by those in the new edition of Pauly's Real-Encyclopaedie, edited by Wissowa. Lastly, Wissowa himself in 1902 published a large volume entitled Die Religion und Kultus der Roemer, which will probably be for many years the best and safest guide for all students of our subject. Thoroughly trained in the methods of dealing with evidence both literary and archaeological, Wissowa produced a work which, though it has certain limitations, has the great merit of not being likely to lead anyone astray. More skilfully and successfully than any of his predecessors, he avoided the chief danger and difficulty that beset all who meddle with Roman religious antiquities, and invariably lead the unwary to their destruction; he declined to accept as evidence what in nine cases out of ten is no true evidence at all--the statements of ancient authors influenced by Greek ideas and Greek fancy. He holds in the main to the principle laid down by Marquardt, that we may use, as evidence for their religious ideas, what we are told that the Romans did in practising their worship, but must regard with suspicion, and subject to severe criticism, what either they themselves or the Greeks wrote about those religious ideas--that is, about divine beings and their doings.