love becomes in man a bloody and a lying idolatry. Such would be the general theory of the two great currents in which human affairs may be said to have been successively drifting. But real history, even the history of all mankind, and much more that of any particular age or country, presents a picture far more complicated. First, as to time: as the vessels in a harbour, and in the open sea without it, may be seen swinging with the tide at the same moment in opposite directions; the ebb has begun in the roadstead, while it is not yet high water in the harbour; so one or more nations may be in advance of or behind the general tendency of their age, and from either cause may be moving in the opposite direction. Again, the tendency or movement in itself is liable to frequent interruptions, and short counter-movements: even when the tide is coming in upon the shore, every wave retires after its advance; and he who follows incautiously the retreating waters, may be caught by some stronger billow, overwhelming again for an instant the spot which had just been left dry. A child standing by the sea-shore for a few minutes, and watching this, as it seems, irregular advance and retreat of the water, could not tell whether it was ebb or flood; and we, standing for a few years on the shore of time, can scarcely tell whether the particular movement which we witness is according to or against the general tendency of the whole period. Farther yet, as these great tendencies are often interrupted, so are they continually mixed: that is, not only are their own good and bad elements successively predominant, but they never have the world wholly to themselves: the opposite tendency exists, in an under-current it may be, and not lightly perceptible; but here and there it struggles to the surface, and mingles its own good and evil with the predominant good and evil of its antagonist. Wherefore he who would learn wisdom from the complex experience of history, must question closely all its phenomena, must notice that which is less obvious as well as that which is most palpable; must judge not peremptorily or sweepingly, but with reserves and exceptions; not as lightly overrunning a wide region of the truth, but thankful if after much pains he has advanced his landmarks only a little; if he has gained, as it were, but one or two frontier fortresses, in which he can establish himself for ever.