The foundation of a serious and scientific study of Greek religion, as distinct from the mere mythology of Hellas, may almost be said to have been an achievement of the last generation of scholars. And it is only through recent research that the Hellenic spirit, so creative and imperial in the domains of literature, art and science, can be recognised as manifesting itself not unworthily in the sphere of religion.
The history of Greek religion means, partly, the account and the interpretation of the various rites, cults and cult-ideas of the various Greek families, tribes and communities; partly the estimate of the religious temperament, both of the masses and of the individuals who emerged from among them and of whom some record has been preserved.
Now as the Greek world in the long period of its independence was never organised as a single State, the attempt to give a summary and general account of its religion is confronted with the perplexity arising from the often incalculable diversity of religious forms and ideas in the different centres of its social life, which was in the highest degree centrifugal. Nevertheless, as will be shown, we find in the midst of manifold local variation certain uniformity of religious psychology, making for uniformity of practice, which enables us to deliver certain general pronouncements about the whole.
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.