In this day ... 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.... 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.(6) During the long years of imprisonment and banishment that followed Bahá’u’lláh’s refusal to serve the political agenda of the Ottoman authorities, ‘Abdu’l-Bahá was entrusted with the management of the Faith’s affairs and with the responsibility of acting as His Father’s spokesman. A significant aspect of this work entailed interaction with local and provincial officials who sought His advice on the problems confronting them. Not dissimilar needs presented themselves in the Master’s homeland. As early as 1875, responding to Bahá’u’lláh’s instructions, ‘Abdu’l-Bahá addressed to the rulers and people of Persia a treatise entitled _The Secret of Divine Civilization_, setting out the spiritual principles that must guide the shaping of their society in the age of humanity’s maturity. Its opening passage called upon the Iranian people to reflect on the lesson taught by history about the key to social progress: Consider carefully: all these highly varied phenomena, these concepts, this knowledge, these technical procedures and philosophical systems, these sciences, arts, industries and inventions—all are emanations of the human mind. Whatever people has ventured deeper into this shoreless sea, has come to excel the rest. The happiness and pride of a nation consist in this, that it should shine out like the sun in the high heaven of knowledge. “Shall they who have knowledge and they who have it not, be treated alike?”(7) _The Secret of Divine Civilization_ presaged the guidance that would flow from the pen of ‘Abdu’l-Bahá in subsequent decades. After the devastating loss that followed the ascension of Bahá’u’lláh, the Persian believers were revived and heartened by a flood of Tablets from the Master, which provided not only the spiritual sustenance they needed, but leadership in finding their way through the turmoil that was undermining the established order of things in their land. These communications, reaching even the smallest villages across the country, responded to the appeals and questions of countless individual believers, bringing guidance, encouragement and assurance. We read, for example, a Tablet addressing believers in the village of Ki_sh_ih, mentioning by name nearly one hundred and sixty of them. Of the age now dawning, the Master says: “this is the century of light,” explaining that the meaning of this image is acceptance of the principle of oneness and its implications: