The history of a religion, the exposition of a form of faith, is not infrequently the memoir of an individual and the chronicle of a race. As a rule, the union of the offices of Prophet and Lawgiver in a single personage deeply impresses the individuality of that personage upon the character of his nation. The annals of the Hebrews are indissolubly bound up with the Holy Scriptures and the precepts of Mosaic law. The mention of ancient Persia suggests at once the texts of the Zendavesta and the ordinances of Zoroaster. The Koran is practically the biography of Mohammed, the tale of his sorrows, his aspirations, his failures, and his triumphs. And what more noble monument could Arabia boast than the proud distinction of having been the home of a prophet and the cradle of a faith for centuries identified with religious toleration, with princely munificence, with scientific investigation, with literary merit,--all intimately associated with her name and with the varying fortunes of her children? The latter, from the first, devoted themselves to the interests of civilization. They settled colonies of skilled artisans in the wake of their armies. They promoted manufactures, encouraged commerce, and in every department of industrial occupation stimulated the efforts of mechanical ingenuity. They developed the science of astronomy. To them chemistry and pharmacy owe their origin. While persevering botanists explored the flora of many lands, the mathematician, in his secluded retreat, expanded and perfected the science of algebra. When a new region was subjected to their rule, all fruits, plants, and herbs, which examination or experience had found to be either edible or curative, were inscribed upon the lists of tribute, and their importation and distribution became compulsory. They branded idleness with contempt; they ennobled labor; and even royalty did not disdain to follow the example of the Prophet, who, with his own hands, assisted in the erection of the mosque of Medina, the first temple of Islam. They translated and preserved for the pleasure and instruction of posterity the immortal productions of the sages of Greece and Rome. They fostered learning, and encouraged its pursuit by maxim, reward, and example, until it became a matter of popular belief, as firmly grounded as the most sacred tradition, that the diligent cultivation of the mental faculties was an imperative religious duty.