“The heights,” Bahá’u’lláh Himself testifies, “which, through the most gracious favor of God, mortal man can attain in this Day are as yet unrevealed to his sight. The world of being hath never had, nor doth it yet possess, the capacity for such a revelation. The day, however, is approaching when the potentialities of so great a favor will, by virtue of His behest, be manifested unto men.”
- Shoghi Effendi (Quoting Bahá’u’lláh in ‘The Unfoldment of World Civilization’)