I think it was the writings of my friend Mr. Andrew Lang that first awoke me, in my undergraduate days, to the importance of anthropology and primitive religion to a Greek scholar. Certainly I began then to feel that the great works of the ancient Greek imagination are penetrated habitually by religious conceptions and postulates which literary scholars like myself had not observed or understood. In the meantime the situation has changed. Greek religion is being studied right and left, and has revealed itself as a surprisingly rich and attractive, though somewhat controversial, subject. It used to be a deserted territory; now it is at least a battle-ground. If ever the present differences resolved themselves into a simple fight with shillelaghs between the scholars and the anthropologists, I should without doubt wield my reluctant weapon on the side of the scholars. Scholarship is the rarer, harder, less popular and perhaps the more permanently valuable work, and it certainly stands more in need of defence at the moment. But in the meantime I can hardly understand how the purest of 'pure scholars' can fail to feel his knowledge enriched by the savants who have compelled us to dig below the surface of our classical tradition and to realize the imaginative and historical problems which so often lie concealed beneath the smooth security of a verbal 'construe'. My own essays do not for a moment claim to speak with authority on a subject which is still changing and showing new facets year by year. They only claim to represent the way of regarding certain large issues of Greek Religion which has gradually taken shape, and has proved practically helpful and consistent with facts, in the mind of a very constant, though unsystematic, reader of many various periods of Greek literature. In the first essay my debt to Miss Harrison is great and obvious. My statement of one or two points is probably different from hers, but in the main I follow her lead. And in either case I cannot adequately describe the advantage I have derived from many years of frequent discussion and comparison of results with a Hellenist whose learning and originality of mind are only equalled by her vivid generosity towards her fellow-workers. The second may also be said to have grown out of Miss Harrison's writings. She has by now made the title of 'Olympian' almost a term of reproach, and thrown down so many a scornful challenge to the canonical gods of Greece, that I have ventured on this attempt to explain their historical origin and plead for their religious value. When the essay was already written I read Mr. Chadwick's impressive book on _The Heroic Age_ (Cambridge, 1912), and was delighted to find in an author whose standpoint and equipment are so different from mine so much that confirmed or clarified my own view.