"Therefore, O brother! kindle with the oil of wisdom the lamp of the spirit within the innermost chamber of thy heart, and guard it with the globe of understanding ..."

"The universe is pregnant with these manifold bounties, awaiting the hour when the effects of Its unseen gifts will be made manifest in this world, when the languishing and sore athirst will attain the living Kawthar 1 of their Well-Beloved, and the erring wanderer, lost in the wilds of remoteness and nothingness, will enter the tabernacle of life, and attain reunion with his heart’s desire. In the soil of whose heart will these holy seeds germinate? From the garden of whose soul will the blossoms of the invisible realities spring forth? Verily, I say, so fierce is the blaze of the Bush of love, burning in the Sinai of the heart, that the streaming waters of holy utterance can never quench its flame. Oceans can never allay this Leviathan’s burning thirst, and this Phoenix of the undying fire can abide nowhere save in the glow of the countenance of the Well-Beloved. Therefore, O brother! kindle with the oil of wisdom the lamp of the spirit within the innermost chamber of thy heart, and guard it with the globe of understanding, that the breath of the infidel may extinguish not its flame nor dim its brightness. Thus have We illuminated the heavens of utterance with the splendours of the Sun of divine wisdom and understanding, that thy heart may find peace, that thou mayest be of those who, on the wings of certitude, have soared unto the heaven of the love of their Lord, the All-Merciful."

-Bahá'u'lláh, The Kitáb-i-Íqán, pp. 60-61

1. River in Paradise