Age of Reason, Footnote 4

It is impossible for us now to know at what time the heathen mythology began; but it is certain, from the internal evidence that it carries, that it did not begin in the same state or condition in which it ended. All the gods of that mythology, except Saturn, were of modern invention. The supposed reign of Saturn was prior to that which is called the heathen mythology, and was so far a species of theism, that it admitted the belief of only one God. Saturn is supposed to have abdicated the government in favor of his three sons and one daughter, Jupiter, Pluto, Neptune, and Juno; after this, thousands of other Gods and demi-gods were imaginarily created, and the calendar of gods increased as fast as the calendar of saints and the calendars of courts have increased since.

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