The insights of the Gospels, of Martin Luther, of the framers of the Constitution, of Marx and Freud—just to mention a very few of those attempts that have been made in the West to increase happiness by enhancing freedom—will always be valid and useful, even though some of them have been perverted in their application. But they certainly do not exhaust either the problems or the solutions.Mihaly CsikszentmihalyiThe Author of this QuoteAuthorMihaly CsikszentmihalyiThe architect of the notion of flow