Of the Double Heaven—The Visible, and the Heaven of Heavens
2 The weakness of my tongue confesses unto Your Highness, seeing that You made heaven and earth. This heaven which I see, and this earth upon which I tread (from which is this earth that I carry about me), You have made. But where is that heaven of heavens, O Lord, of which we hear in the words of the Psalm, The heaven of heavens are the Lord's, but the earth has He given to the children of men? Where is the heaven, which we behold not, in comparison of which all this, which we behold, is earth? For this corporeal whole, not as a whole everywhere, has thus received its beautiful figure in these lower parts, of which the bottom is our earth; but compared with that heaven of heavens, even the heaven of our earth is but earth; yea, each of these great bodies is not absurdly called earth, as compared with that, I know not what manner of heaven, which is the Lord's, not the sons' of men.
Source: Confessions (New Advent)