He is the true servant of God who, in this day, were he to pass through cities of silver and gold, would not deign to look upon them, and whose heart would remain pure and undefiled from whatever things can be seen in this world, be they its goods or its treasures. I swear by the Sun of Truth! The breath of such a man is endowed with potency, and his words with attraction. (Baha’u’llah, quoted by Shoghi Effendi in ‘The Advent of Divine Justice)