Ancient Sources: Literary.—Our real knowledge of any ancient religion depends obviously on the copiousness and variety of our records. And it is likely to be more luminous, if the society in question expressed its religious life not only in surviving literature, but also in surviving art. Of both these kinds the student of Greek religion has an unusually rich material.
For in spite of its secular freedom, which is its salient achievement, Greek literature in its highest and most popular forms, as well as in its narrower and more special, is deeply infused or preoccupied with religion and religious myth. In fact, it reflects the vivifying penetration of religion into all parts of Greek activity and mental life. This is obviously true of the epic period, which produced the two types of the chivalrous and the theologic epic, and which has left us most valuable material for the religious history of the tenth and ninth centuries in the Homeric poems, and of the eighth and seventh centuries in the poems of Hesiod and in the ‘Homeric’ hymns. It is none the less true of the great lyric movement that followed upon that, when the greatest poets devoted themselves to the composition of songs for festal-religious occasions or of hymns for the service of temple or altar; and besides these whose great names and fragments of whose great works survive, there was another less distinguished group of special ‘hieratic’ poets, such as Pamphos and Mousaios, who composed hymns for the service of certain mystery-cults, and whose compositions were preserved as liturgical documents by the priestly families that administered them.
The sententious ethical-political poetry of the sixth century, the elegiacs of Theognis and Solon, is instinct with religious emotion and reflection. And the greatest product of the poetic genius of Hellas, the tragic drama, is of a religious character, both in respect of its origin and much of its subject-matter. Finally, the later learned poetry of the Ptolemaic period, the Kassandra of Lycophron, the hymns and other works of Kallimachos, the epic poem of Apollonios Rhodios, are full of antiquarian religious lore.
At the same time, our knowledge is much indebted to the great prose-writers of Greece, the philosophers, historians and orators; among the philosophers, especially to Plato, who more copiously than any of the others reveals to us, however much he idealises, the religious psychology and cult-phenomena of his period; among the historians, especially to Herodotus, who is the intellectual ancestor of the modern anthropologist and student of comparative religion and whose presentation of the facts is coloured with religious conviction. The works of the Attic orators are of special value for our purpose, first because the classical orator was far more apt than the modern to dilate on religious themes and appeal to religious sentiments, as religion was far more closely interfused with political and social life; secondly, because we are more sure of the orator than we can be of the poetic or philosophic writer that his words are attuned to the average pitch of popular belief and sentiment.
It is true then that all the great fields of Greek literature make their several contributions to the material of our subject. And besides the works of the great masters, the student has to reckon with the secondary and parasitic work of the later scholiasts, compilers and commentators, which is even more replete with the special information upon which the history of Greek religion can be built. The study of it is, in fact, almost coextensive with the whole study of Greek literature.
But amidst this profusion of material we must specially mark the works of those ancients who wrote direct treatises on the various religious phenomena, on the Gods, the cult-practices, the theologic and mythologic systems of the Hellenic societies. The earliest of such works that have come down to us are the poems of Hesiod and the Hesiodic school, the Works and Days and the Theogony, while of parts of the ‘Homeric’ hymns the special theme is the attributes and functions of the various divinities. But it was not till the period of scientific activity after Aristotle that definite treatises in prose on different departments of the national religion began to be rife. A chapter on sacrifice by Theophrastos is mainly preserved for us by Porphyry. The writers of ‘Atthides’ or Attic history and antiquities, who belonged mainly to the third century, were special workers in this field; Philochoros, the chief of them, wrote ‘on festivals,’ ‘on sacred days,’ ‘on divination,’ ‘on the Attic mysteries’; Istros, the slave and friend of Kallimachos, on the ‘manifestations of Apollo’ and on ‘the Cretan sacrifices’; while the ‘exegetic work’ of Kleidemos was, if we may judge from the fragments that remain, occupied with the problems of religion and mythology. Outside this circle we hear of other contributions to the history of Greek religion, such as the treatises of Herakleides, probably the pupil of Aristotle, usually called ‘Pontikos,’ on ‘the foundations of temples,’ and ‘on oracles’; and a work by an unknown Sokrates of Kos on the important subject of ‘Invocation-titles of the Gods.’ Lastly may be mentioned here a treatise of Apollodoros, ‘περι Θεῶν,’ which, if he is to be identified with the author of the ‘Bibliotheca,’ was probably a learned account of the popular religion rather than a metaphysical enquiry.
Of nearly all this scientific post-Aristotelian literature only isolated fragments survive in quotations by later writers, lexicographers, and scholiasts, who were no doubt more deeply indebted to it than they always acknowledged; but it is some compensation for our loss that the work last mentioned, the Bibliotheca of Apollodoros, has been preserved, a rich storehouse of myth and folklore with some infusion of actual cult-record. Among the later literature our subject is indebted to the geographer, Strabo, for many incidental observations of local cults and ritual; still more to the philosophic moralist and littérateur, Plutarch, a man of earnest religious interest and some power of original thought, who knew the religion of his country at first hand and at a time when it was yet alive, and who devoted to it much attention and literary industry; hence we must rank high among our ancient authorities his Quæstiones Græcæ and his treatises ‘on the Pythian Oracle’ and on ‘the cessation of oracles.’ Again, much desultory but varied information is afforded by the compilers Athenæus, in his Deipnosophistæ, and Stobæus, in his Florilegium. But of higher value than all these, or in fact than any work that has been bequeathed to us from antiquity, is the Descriptio Græciæ, by Pausanias, composed about 180 A.D.; for he travelled somewhat as a modern anthropologist, relying partly on earlier literature, yet using his own eyes and ears and his own notes; and his ruling passion was the study of the folk-religion and the religious monuments; so that it is due mainly to him that we know something of the village-religion of Hellas as distinct from that of the great cities, and can frame working theories of the evolution through immemorial ages of various growths of the polytheism.
The lexicographers Harpokration, Hesychios and Suidas contribute facts of value, especially in their citation of cult-appellatives, which owing to the magic value of the special name or title whereby the deity was invoked throw a revealing light on the significance and power of many a worship, and help to frame our conception of the complex character of many a divinity. Again, the various collections of ‘Scholia’ on the classical texts are a rich quarry for our reconstruction of the fabric of Hellenic religion; and of chief value among these are the Scholia on Homer, Pindar, Æschylus, Euripides, Aristophanes and Theocritus, while Servius’ Commentary on Vergil tells us even more about Greek cult and mythology than about Roman; and high in this class of our authorities we must rank a work of late Byzantine learning, the Commentary of Tzetzes on Lykophron’s poem, ‘Kassandra,’ for his scholia are charged with remote antiquarian lore derived from good sources.
Finally, we gather much of our knowledge from the controversial treatises of the early Christian Fathers, written with propagandist zeal in the heat of their struggle against Paganism. They reveal to us much of the religion that they strove to overthrow by the exposure of its viciousness and its absurdities. But their statements must be used with cautious criticism. Their knowledge was by no means always at first hand, unless—which we rarely know to have been the case—they were, like Clemens of Alexandria, converted Pagans who had been bred up in the Græco-Roman polytheism. Their statements, for instance, about the Greek mysteries are often vague and unconvincing, while in their desire to include them all in one general condemnation they confuse Anatolian rites with Eleusinian. And they are pardonably blind to the often beautiful ritual, the nobler ideas and the higher moral elements in the older Mediterranean religions. Nevertheless, if we make due allowance for prejudice and exaggeration, works such as the Protreptica of Clemens, the treatise of Arnobius, Adversus Gentes, of Firmicus Maternus, De Errore Profanarum Gentium, Eusebius’ Præparatio Evangelica, Augustine’s De Civitate Dei, Athenagoras’ Legatio, must be ranked among the primary sources of our history.
A special but very important chapter in the later history of Greek religion is the account of the growth and diffusion of the religious brotherhoods, especially the Orphic Dionysiac societies. For these we have something of direct liturgical evidence in the collection of Orphic hymns, mainly the products of the later theosophic period, but throwing light on the theology and ritual of these sects. But our knowledge of this mystic religion which was engrafted upon Hellenism has been in recent times enriched by the priceless discovery of an ancient poetical Orphic liturgy engraved upon gold-leaf found in tombs of Crete and South Italy and probably a product of the fifth century B.C.