How mistaken are those people who seek happiness outside of themselves, in foreign lands and journeys, in riches and glory, in great possessions and pleasures, in diversions and vain things, which have a bitter end! In the same thing to construct the tower of happiness outside of ourselves as it is to build a house in a place that is consistently shaken by earthquakes. Happiness is found within ourselves, and blessed is the man who has understood this. Happiness is a pure heart, for such a heart becomes the throne of God.
–Saint  Nektarios of Aegina (1846-1920)