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pansion of Machiavelli, and his influence is proof that, in the long-run, men cannot separate their international code from their private one. We must remember that Acton lived in a time when, as he said, the course of history had been U twenty-five times diverted by actual or attempted crime," and when the old ideals of liberty seemed swallowed up by the pursuit of gain. To all those who reflect on history or politics, it was a gain of the highest order that at the very summit of historical scholarship and profound political knowledge there should be placed a leader who erred on the unfashionable side, who denied the statesmen's claim to subject justice to expediency, and opposed the partisan's attempt to palter with facts in the interest of his creed. It is these principles which both explain Acton's work as a student, and make it so difficult to understand. He believed, that as an investigator of facts the historian must know no passion, save that of a desire to sift evidence; and his notion of this sifting was of the re- morseless scientific school of Germany, which sometimes, perhaps, expects more in the way of testimony than human life affords. At any rate, Acton demanded that the historian must never misconceive the case of the adversaries of his views, or leave in shade the faults of his own side. But on the other hand, \vhen he comes to interpret facts or to trace their relation, his views and even his temperament will affect the result. It is only the barest outline that can be quite objective. In Acton's view the historian as investigator is one thing, the historian as judge another. In an early essay on Döllinger he makes a distinction of this kind. The reader must bear it in mind in considering Acton's own writing. Some of the essays here printed, and still more the lectures, are anything but colourless; they show very distinctly the predilections of the writer, and it is