of individual opposed to individual.  But where this also is wanting, and at first no animosity of feeling subsists, a hostile feeling is kindled by the combat itself; for an act of violence which any one commits upon us by order of his superior, will excite in us a desire to retaliate and be revenged on him, sooner than on the superior power at whose command the act was done.  This is human, or animal if we will; still it is so.  We are very apt to regard the combat in theory as an abstract trial of strength, without any participation on the part of the feelings, and that is one of the thousand errors which theorists deliberately commit, because they do not see its consequences.

Besides that excitation of feelings naturally arising from the combat itself, there are others also which do not essentially belong to it, but which, on account of their relationship, easily unite with it—­ambition, love of power, enthusiasm of every kind, &c. &c.

18.  The impressions of danger. (Courage.)

Finally, the combat begets the element of danger, in which all the activities of War must live and move, like the bird in the air or the fish in the water.  But the influences of danger all pass into the feelings, either directly—­that is, instinctively—­or through the medium of the understanding.  The effect in the first case would be a desire to escape from the danger, and, if that cannot be done, fright and anxiety.  If this effect does not take place, then it is courage, which is a counterpoise to that instinct.  Courage is, however, by no means an act of the understanding, but likewise a feeling, like fear; the latter looks to the physical preservation, courage to the moral preservation.  Courage, then, is a nobler instinct.  But because it is so, it will not allow itself to be used as a lifeless instrument, which produces its effects exactly according to prescribed measure.  Courage is therefore no mere counterpoise to danger in order to neutralise the latter in its effects, but a peculiar power in itself.

19.  Extent of the influence of danger.

But to estimate exactly the influence of danger upon the principal actors in War, we must not limit its sphere to the physical danger of the moment.  It dominates over the actor, not only by threatening him, but also by threatening all entrusted to him, not only at the moment in which it is actually present, but also through the imagination at all other moments, which have a connection with the present; lastly, not only directly by itself, but also indirectly by the responsibility which makes it bear with tenfold weight on the mind of the chief actor.  Who could advise, or resolve upon a great battle, without feeling his mind more or less wrought up, or perplexed by, the danger and responsibility which such a great act of decision carries in itself?  We may say that action in War, in so far as it is real action, not a mere condition, is never out of the sphere of danger.