4. However, some of the ungodly have come to so great a pitch of madness, as even to attack His illustration. Because, say they, it was not meet for one strengtheningmoral principle, to use natural advantages as incitements to that end. For to those animals, they add, this belongs by nature. What then shall we say to this? That even though it is theirs by nature, yet possibly we too may attain it by choice. For neither did He say, “behold how the birds fly,” which were a thing impossible to man; but that they are fed without taking thought, a kind of thing easy to be achieved by us also, if we will. And this they have proved, who have accomplished it in their actions.