Tremendous purity, tremendous renunciation, is the one secret of spirituality. Neither through wealth, nor through progeny, but through renunciation alone is immortality to be reached, say the Vedas. Sell all that thou hast and give to poor, and follow me, says the Christ. So all great saints and prophets have expressed it, and have carried it out in their lives. How can great spirituality come without renunciation? - Swami Vivekananda