It is incumbent upon you to ponder in your hearts and meditate upon His [Baha’u’llah’s] words, and humbly to call upon Him, and to put away self in His heavenly Cause. These are the things that will make of you signs of guidance unto all mankind, and brilliant stars shining down from the all-highest horizon, and towering trees in the Abhá Paradise.
- ‘Abdu’l-Baha (‘Selections from the Writings of ‘Abdu’l-Baha’)