With psychological and philosophical sophistries no theory, no General, should meddle.
16.

PRINCIPAL DIFFICULTY OF A THEORY FOR THE CONDUCT OF WAR.
In order to comprehend clearly the difficulty of the proposition which is contained in a theory for the conduct of War, and thence to deduce the necessary characteristics of such a theory, we must take a closer view of the chief particulars which make up the nature of activity in War.
17.

FIRST SPECIALITY .-- MORAL FORCES AND THEIR EFFECTS.

(HOSTILE FEELING.) The first of these specialities consists in the moral forces and effects.
The combat is, in its origin, the expression of HOSTILE FEELING, but in our great combats, which we call Wars, the hostile feeling frequently resolves itself into merely a hostile VIEW, and there is usually no innate hostile feeling residing in individual against individual.
Nevertheless, the combat never passes off without such feelings being brought into activity.

National hatred, which is seldom wanting in our Wars, is a substitute for personal hostility in the breast of individual opposed to individual.