If we add to the fourth and fifth principles, the consideration that these forces of the defensive belong to the original defensive, that is the defensive carried on in our own soil, and that they are much weaker if the defence takes place in an enemy’s country and is mixed up with an offensive undertaking, then from that there is a new disadvantage for the offensive, much the same as above, in respect to the third principle; for the offensive is just as little composed entirely of active elements, as the defensive of mere warding off blows; indeed every attack which does not lead directly to peace must inevitably end in the defensive.
[ ... ]

We think we have now sufficiently established our proposition, that the defensive is a stronger form of war than the offensive; but there still remains to be mentioned one small factor hitherto unnoticed. It is the high spirit, the feeling of superiority in an army which springs from a consciousness of belonging to the attacking party. The thing is in itself a fact, but the feeling soon merges into the more general and more powerful one which is imparted by victory or defeat, by the talent or incapacity of the general.