With penetrating insight, the mystics will tell us that when we have a desire for a certain thing, a certain experience, and we fulfill that desire, the happiness we feel is not something given by that thing or experience; it is due to having no craving for a little while. – Eknath Easwaran, The Mantram Handbook

With respect to the first of these obstacles, it has often been made a matter of grave complaint against Political Economists, that they confine their attention to Wealth, and disregard all consideration of Happiness or Virtue. – Nassau William Senior