Stewart Lygon Murray, The Reality of War: A Companion to Clausewitz
“ Why is the simplest thing difficult? Because of the friction of war. And how can that friction be minimized? Only by force of character, and the military virtues of discipline, perseverance, resolution, energy, and boldness. Hence the great emphasis which he always and everywhere lays upon character and these military virtues as the deciding factors in war."Friction is the only conception which in a general way corresponds to that which distinguishes real war from war on paper," he says. Each individual of the army "keeps up his own friction in all directions." ”
