The Revelation of Bahá’u’lláh, whose supreme mission is none other but the achievement of this organic and spiritual unity of the whole body of nations, should, if we be faithful to its implications, be regarded as signalizing through its advent the coming of age of the entire human race. It should be viewed not merely as yet another spiritual revival in the ever-changing fortunes of mankind, not only as a further stage in a chain of progressive Revelations, nor even as the culmination of one of a series of recurrent prophetic cycles, but rather as marking the last and highest stage in the stupendous evolution of man’s collective life on this planet.
- Shoghi Effendi (‘The Unfoldment of World Civilization’, included in ‘The World Order of Bahá’u’lláh)