“The intelligible forms of ancient poets, The fair humanities of old religion, The Power, the Beauty, and the Majesty That had their haunts in dale or piny mountain. […] The religions of ancient Greece and Rome are extinct. […] In order to understand these stories, it will be necessary to acquaint ourselves with the ideas of the structure of the universe which prevailed among the Greeks — the people from whom the Romans, and other nations through them, received their science and religion.