We do not believe that history supplies any trustworthy data for casting the horoscope of our war. America is something without precedent Moreover, such changes have been going on in the social and moral condition of nations as to make the lessons of even comparatively recent times of little import in forming conclusions on contemporary affairs. Formerly a fact, not yet forgetful of its etymology, was a thing done, a deed, and in a certain sense implied, truly enough, the predominance of individual actors and prevailing characters. But powerful personalities are becoming of less and less account, when facility of communication has given both force and the means of exerting it to the sentiment of civilized mankind, and when commerce has made the banker's strong-box a true temple of Janus, the shutting or opening of which means peace or war. Battles are decisive now not so much by the destruction of armies as by the defeat of public spirit, and a something that has actually happened may be a less important fact, either in conjecturing probabilities or determining policy, than the indefinable progress of change, not marked on any dial, but instinctively divined, that is taking place in the general thought. The history of no civil war can be written without bias, scarcely without passionate prejudice. It is always hard for men to conceive the honesty or intelligence of those who hold other opinions, or indeed to allow them the _right_ to think for themselves; but in troubled times the blood mounts to the head, and colors the judgment, giving to suspicions and fancies the force of realities, and intensifying personal predilections, till they seem the pith and substance of national duties. Even where the office of historian is assumed in the fairest temper, it is impossible that the narrative of events whose bearing is so momentous should not insensibly take somewhat the form of an argument,--that the political sympathies of the author should not affect his judgment of men and measures. And in such conflicts, far more than in ordinary times, as the stake at issue is more absorbing and appeals more directly to every private interest and patriotic sentiment, so men, as they become prominent, and more or less identified with this or that policy, at last take the place of principles with the majority of minds. To agree with us is to be a great commander, a prudent administrator, a politician without private ends.