"So that what we say may be understood quite concretely, let us now bring the argument to bear upon actual passages in Scripture. To what person of intelligence, I ask, will the account seem logically consistent that says there was a "first day" and a "second" and "third", in which also "evening" and "morning" are named, without a sun, without a moon, and without stars, and even in the case of the first day without a heaven? And who will be found simple enough to believe that like some farmer "God planted trees in the garden of Eden, in the east?" and that He planted "the tree of life" in it, that is a visible tree that could be touched, so that someone could eat of this tree with corporeal teeth and gain life, and, further, could eat of another tree and receive knowledge "of good and evil"? Moreover, we find that God is said to stroll in the garden in the afternoon and Adam to hide under a tree. Surely, I think no one doubts that these statements are made by Scripture in the form of a type by which they point toward certain mysteries. . . But there is no need for us to enlarge the discussion too much beyond what we have in hand, since it is quite easy for everyone who wishes to collect from the holy Scriptures things that are written as though they were really done, but cannot be believed to have happened appropriately and reasonably according to the narrative meaning."
-- Origen, On First Principles