There are flaws in the usual methods of research into religious origins which have become apparent to the writer during several years' work on the cult of one Greek god. It has therefore seemed desirable to restate and to examine these methods so as to demonstrate the merits and the faults of each. To do so is one aim of this paper; another is an elucidation of the many important advantages of the historical approach, and, although it is hoped that the principles herein erected as guides to study are applicable to all ancient gods, the illustrations of these principles will derive very largely from Hermes, the god with whose cult and concept the writer has been most closely concerned.
It would be hard to exaggerate the difficulties which beset a student when he turns to the problem of an ancient god's origin. Even a partial solution demands his utmost caution, for the easy explanation is hardly ever the right one. He must guard himself against the beguilements of the attractive theory which will very often beckon him down the wrong path. To avoid this and to enter upon his task most wisely he will meditate upon two main initial difficulties.
The first one to present itself is, of course, the fact that the origin of most gods worshipped by the Greeks lies in the past far behind Homer. Therefore the student is faced with an almost total lack of literary and epigraphical material—at least which he can understand— to aid him in the search.