"AND GOD was not ignorant that man would sin, and that, being himself made subject now to death, he would propagate men doomed to die, and that these mortals would run to such enormities in sin, that even the beasts devoid of rational will, and who were created in numbers from the waters and the earth, would live more securely and peaceably with their own kind than men, who had been propagated from one individual for the very purpose of commending concord. For not even lions or dragons have ever waged with their kind such wars as men have waged with one another."
~St. Augustine: The City of God, Bk. 12, Ch. 22.