Now Homer was, in a sense, the Bible of the Greeks, and as society improved in morals, and thought was directed more and more fearlessly towards religious questions, the puzzle as to the immoralities of the gods became acute. The religious and intellectual developments of the sixth century B.C. led to various ways of explaining the old stories. Sophocles is conciliatory, conceiving religion in a sunny good temper which will make the best of the situation whatever it is. AEschylus is sombre and deeply tragic, while yet he remains orthodox on the side of the gods. But Euripides is angry at the old scandals, and in the name of humanity his scepticism rises in protest. It may be interesting, at this point, to glance for a little at the various theories which have been brought forward to explain the myths. The commonest of all such theories is that the divine personalities stand for the individual powers of nature. Most especially, the gods and goddesses symbolise the sun, moon, and stars, night and morning, summer and winter, and the general story of the year. No one will deny that the personification of Nature had a large share in all mythology. The Oriental mythologies rose to a large extent in this fashion. The Baals of Semitic worship all stood for one or other of the manifestations of the fructifying powers of nature, and the Chinese dragon is the symbol of the spiritual mystery of life suggested by the mysterious and protean characteristics of water. It is very natural that this should be so, and every one who has ever felt the power of the sun in the East will sympathise with Turner's dying words, "The sun, he is God." As a key to mythology this theory was especially associated with the name of Plutarch among ancient writers, and it has been accepted more or less completely by a vast number of moderns. In the late Sir George Cox's fascinating stories it was run to utter absurdity. The story is beautifully told in every case, and when we have enjoyed it and felt something of the exquisiteness of the conception and of the variety and range of thought exhibited in the fertile minds of those who had first told it, Sir George Cox draws us back sharply to the assertion that all we have been hearing really meant another phase of sunset or sunrise, until we absolutely rebel and protest that the effect is unaccountable upon so meagre a cause. It is an easy method of dealing with folk-lore. If you take the rhyme of Mary and her little lamb, and call Mary the sun and the lamb the moon, you will achieve astonishing results, both in religion and astronomy, when you find that the lamb followed Mary to school one day. This nature element, however, had undoubtedly a very considerable part in the origin of myths, and when Max Mueller combines it with philology it opens a vast field of extraordinarily interesting interpretations resting upon words and their changes.