Happiness is the interval between periods of Posted on August 8, 2013August 8, 2008 by admin “Happiness is the interval between periods of unhappiness.” — Don Marquis Author: Don Marquis Category: happiness Tags: happiness, Don Marquis Spread the love Related posts: Some cause happiness wherever they go; others Happiness depends upon ourselves. Happiness is the only good. The time An effort made for the happiness of