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 the other side. If the economic man has defiled temples and despoiled nature, he has also preserved. He has policed the world and parked it, reduced the dangers of life and limb, made the tenure of existence less precarious, and rendered a general relapse of society impossible. There can never again be an intellectual holocaust, such as the burning of the Alexandrian library. Civilizations may wax and wane, but the totality of knowledge cannot decrease. With the possible exception of a few trade secrets, arts and sciences may be discarded, but they can never be lost. And these things must remain true until the end of man's time upon the earth.

Up to yesterday communication for any distance beyond the sound of the human voice or the sight of the human eye was bound up with locomotion. A letter presupposed a carrier. The messenger started with the message, and he could not but avail himself of the prevailing modes of travel. If the voyage to Australia required four months, four months were required for communication; by no known means could this time be lessened. But with the advent of the telegraph and telephone communication