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. The emergence of a world community, the consciousness of world citizenship, the founding of a world civilization and culture -- all of which must synchronize with the initial stages in the unfoldment of the Golden Age of the Bahá'í Era -- should, by their very nature, be regarded, as far as this planetary life is concerned, as the furthermost limits in the organization of human society, though man, as an individual, will, nay must indeed as a result of such a consummation, continue indefinitely to progress and develop. (Shoghi Effendi, The World Order of Baha'u'llah, p. 163)
