Excerpt: ?If that imaginary individual so convenient for literary illustration, a visitor from Mars, were to alight upon our planet at its present stage of development, and if his intellectual interests induced him to survey the range of terrestrial views of the nature of what is "in heaven above, or on the earth beneath, or in the waters under the earth," to appraise mundane opinion in regard to the perennial problems of mind and matter, of government and society, of life and death, our Martian observer might conceivably report that a limited portion of mankind were guided by beliefs representing the accumulated toil and studious devotion of generations,?the outcome of a slow and tortuous but progressive growth through error and superstition, and at the cost of persecution and bloodshed; that they maintained institutions of learning where the fruits of such thought could be imparted and the seeds cultivated to bear still more richly; but that outside of this respectable yet influential minority, there were endless upholders of utterly unlike notions and of widely diverging beliefs, clamoring like the builders of the tower of Babel in diverse tongues."