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 system, or even to the universe itself. The mind of the universe may be man, who may be the confluence of universal intelligence. The eternity of the past, the infinity of the present, may be peopled with races like our own, but whether they die out with the worlds they occupy, or enjoy a perpetual existence, transcends the present limits of our knowledge. From century to century the solid ground of science gains on the illimitable ocean of the unknown, but we are ignorant as to whether we exist in the dawn or in the noon-*day of enlightenment. The conceptions of one age become the achievements of the next; and the philosopher may question whether this world be not some remote, unaffiliated tract, which remains to be annexed to the empire of universal civilization. The discoveries of the future may be as undreamt of as those of the past, and the ultimate destiny of our race is hidden from existing generations.

In the period I have chosen to bring before the reader, civilization was on the decline, and progress imperceptible, but the germs of a riper growth were still existent, concealed within the spreading darkness of mediaevalism. When Grecian science and philosophy seemed to stand on the threshold of modern enlightenment the pall of despotism and superstition descended on the earth and stifled every impulse of progress for more than fifteen centuries. The Yggdrasil of Christian superstition spread its roots throughout the Roman Empire, strangling alike the nascent ethics of Christendom, and the germinating science of the ancient world. Had the leading minds of that epoch, instead of expending their zeal and acumen on theological inanities, applied themselves to the study of nature, they might have forestalled the march of the centuries, and advanced us a