"The ancients, by their system of colonization, made themselves friends all over the known world; the moderns have sought to make subjects, and therefore have made enemies."

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Colonization means potential immortality for the human genus. Man's safety on Earth was never great, and it dwindles hourly. Disarmament, even world government, will not guarantee survival in an age when population presses natural resources to the limit and when the knowledge of how to work mischief on a planetary scale is ever more widely diffused among peoples who may grow ever more desperate.

— Poul Anderson