Birth dates of economists whose theories are still active today By dimitrisleq Period: Jun 16, 1723 to Nov 29, 2015 Birth of Adam Smith, father of Classical theory Period: Jun 5, 1883 to Nov 29, 2015 Birth of John Mayard Kaynes, father of Kaynesian theory Period: Jul 31, 1912 to Nov 29, 2015 Birth of Milton Friedman, father of Monetarist theory