"Let thy soul glow with the flame of this undying Fire that burneth in the midmost heart of the world..."

"Let thy soul glow with the flame of this undying Fire that burneth in the midmost heart of the world, in such wise that the waters of the universe shall be powerless to cool down its ardor. Make, then, mention of thy Lord, that haply the heedless among Our servants may be admonished through thy words, and the hearts of the righteous be gladdened."

(Gleanings from the Writings of Bahá’u’lláh, XV, part 5)
www.bahai.org/r/967471334