Homer was not the only poet who furnished the Greeks with a system of their gods; nor was his system everywhere accepted without demur. Hesiod, writing in the latter half of the eighth century B.C., gives a "theogony" or birth of the gods, which is also a genesis or origin of the world, for to the Greek mind the gods and the world came into existence together. He complains of those who on this subject have taught fictions which resemble truths, referring perhaps to Homer. His own system of the world is not a light and airy fabric but a laborious work, due no doubt to professional or priestly industry, in which the attempt is made to treat all the divine figures or half-figured spirits the Greeks knew, genealogically, and to give a complete enumeration of them. Myths are given, some of them of a horrible character, which do not occur in Homer. The battle of the gods with the Titans occupies a large part of the poem, and it concludes with a collection of stories showing the descent of heroes from alliances between gods and mortals. This work, as we saw, was considered, along with the Homeric poems, as a standard authority on the subject of the gods, and was appealed to even in the early Christian centuries as showing what the Greeks believed. The Poets and the Working Religion.--The work of these poets proves that the Greeks in their days were anxious to arrive at clear and harmonious conceptions about the gods. The movement on which Homer and Hesiod set their seal, of fixing the characters and attributes of the various deities, must have been long going on; and it led, as we see, to different results in different places. That labour when accomplished endowed Greece with a new religion. The local rite still went on, which acknowledged no central authority and presented the spectacle of an infinite diversity. Each city carried on in grave and solemn fashion the traditional worship of its own gods, on whose favour its prosperity depended. The other gods of the Pantheon the city did not need to worship; and moreover local worship was addressed to a large extent to the Chthonian or earth-gods, as Demeter and Dionysus, of whom the epic poems know but little. The poets were of little assistance therefore to the working religion; but on the other hand the happy and beautiful deities of Homer found entrance wherever poetry was loved. This was a religion for all Greece; these gods were national; though some of them belonged originally to Aeolia, they had become national by being enshrined in poetry which the whole nation regarded as its own. The Homeric conception of deity acted therefore on the whole Greek mind; all gods rose in rank by the example, a subject was set before the mind of the people, which the closely succeeding development of religious art shows to have been studied in the noblest way.