are equally military, and neither the one nor the other can be eligible unless it suits the circumstances of the case. The third, by far the most important, from the great number of cases which it embraces, is the wearing out of the enemy. We choose this expression not only to explain our meaning in few words, but because it represents the thing exactly, and is not so figurative as may at first appear. The idea of wearing out in a struggle amounts in practice to a gradual exhaustion of the physical powers and of the will by the long continuance of exertion.
Now, if we want to overcome the enemy by the duration of the contest, we must content ourselves with as small objects as possible, for it is in the nature of the thing that a great end requires a greater expenditure of force than a small one; but the smallest object that we can propose to ourselves is simple passive resistance, that is a combat without any positive view. In this way, therefore, our means attain their greatest relative value, and therefore the result is best secured. How far now can this