Rothbard, Murray N., Economic Thought Before Adam Smith: Austrian Perspective on the History of Economic Thought, Vol. 1, Cheltenham, UK, Edward Elgar Publishing, 1995, pg. 8; Gordan, Barry J., Economic analysis before Adam Smith: Hesiod to Lessius (1975), pg. 3; Brockway, George P., The End of Economic Man: An Introduction to Humanistic Economics, fourth edition (2001), pg 128.
