In cycles gone by, though harmony was established, yet, owing to the absence of means, the unity of all mankind could not have been achieved. Continents remained widely divided, nay even among the peoples of one and the same continent association and interchange of thought were well-nigh impossible. Consequently intercourse, understanding and unity amongst all the peoples and kindreds of the earth were unattainable. In this day, however, means of communication have multiplied, and the five continents of the earth have virtually merged into one.... In like manner all the members of the human family, whether peoples or governments, cities or villages, have become increasingly interdependent. For none is self-sufficiency any longer possible, inasmuch as political ties unite all peoples and nations, and the bonds of trade and industry, of agriculture and education, are being strengthened every day. Hence the unity of all mankind can in this day be achieved. Verily this is none other but one of the wonders of this wondrous age, this glorious century. Of this past ages have been deprived, for this century—the century of light—has been endowed with unique and unprecedented glory, power and illumination. Hence the miraculous unfolding of a fresh marvel every day. Eventually it will be seen how bright its candles will burn in the assemblage of man. (‘Abdu’l-Baha, quoted by Shoghi Effendi in The Promised Day is Come)
