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One of the great springs of war may be found in a very strong and general propensity of human nature, in the love of excitement, of emotion, of strong interest; a propensity which gives a charm to those bold and hazardous enterprises which call forth all the energies of our nature. No state of mind, not even positive suffering, is more painful than the want of interesting objects. The vacant soul preys on itself, and often rushes with impatience from the security which demands no effort, to the brink of peril.
— WILLIAM ELLERY CHANNING