Swami Vivekananda: Love is the Law of Life

All love is expansion, all selfishness is contraction. Love is therefore the only law of life. He who loves lives, he who is selfish is dying. Therefore love for love's sake, because it is law of life, just as you breathe to live.
- Swami Vivekananda

True Happiness -By Swami Vivekananda

Desire, want, is the father of all misery. Desires are bound by the laws of success and failure. Desires must bring misery. The great secret of true success, of true happiness, is this: the person who asks for no return, the perfectly unselfish person, is the most successful.