Praise be to God, throughout succeeding centuries and ages the call of civilization hath been raised, the world of humanity hath been advancing and progressing day by day, various countries have been developing by leaps and bounds, and material improvements have increased, until the world of existence obtained universal capacity to receive the spiritual teachings and to hearken to the Divine Call. The suckling babe passeth through various physical stages, growing and developing at every stage, until its body reacheth the age of maturity. Having arrived at this stage it acquireth the capacity to manifest spiritual and intellectual perfections. The lights of comprehension, intelligence and knowledge become perceptible in it and the powers of its soul unfold. Similarly, in the contingent world, the human species hath undergone progressive physical changes and, by a slow process, hath scaled the ladder of civilization, realizing in itself the wonders, excellencies and gifts of humanity in their most glorious form, until it gained the capacity to express the splendours of spiritual perfections and divine ideals and became capable of hearkening to the call of God. Then at last the call of the Kingdom was raised, the spiritual virtues and perfections were revealed, the Sun of Reality dawned, and the teachings of the Most Great Peace, of the oneness of the world of humanity and of the universality of men, were promoted. We hope that the effulgence of these rays shall become more and more intense, and the ideal virtues more resplendent, so that the goal of this universal human process will be attained and the love of God will appear in the utmost grace and beauty and bedazzle all hearts.
- ‘Abdu’l-Baha (‘Selections from the Writings of ‘Abdu’l-Baha’)