Natural Enemies

Famous quotes containing the words natural and/or enemies:

“The persons who constitute the natural aristocracy, are not found in the actual aristocracy, or, only on its edge; as the chemical energy of the spectrum is found to be greatest just outside of the spectrum.”
—Ralph Waldo Emerson (1803–1882)

“Not only the bull attacks his enemies with curved horn, but also the sheep, when harmed fights back.”
—Propertius Sextus (c. 50–16 B.C.)