While perusing an old essay about John Adams, I stumbled upon this pearl of wisdom: "After [reading] a long and learned discourse from St. Augustine on the thesis that copulation was not known to Adam and Eve until after their expulsion from Eden, Adams could stand it no longer. 'Had Eve Bubbies?' he exploded. 'Could Adam see them, or feel them, without Concupiscence? Were they not made to Suckle Infants? For what was the Uterus made?"
Is there a better, short introduction to the idea of nature?