“No guess-work! I was certain of my goal;
Some thought it heresy, but that would not hold.
King David called the heavens a hide, a tent
Spread over earth, and so this earth was flat;
Some cited old Lactantius; could it be
That trees grew downward, rain fell upward, men
Walked like the fly on ceilings? and, besides,
The great Augustine wrote that none could breathe
Within the zone of heat; so might there be
Two Adams, two mankinds, and that was clean