"Generosity takes many forms—we may give our time, our energy, our material possessions, our love.   All are expressions of caring, of compassion, of connection, and of renunciation—the ability to let go.  The beauty of generosity is that it not only brings us happiness in the moment—we feel good when we give—but it is also the cause for happiness to arise in the future."
Joseph Goldstein, “The Evolution of Happiness”