“Not at all. You remember that book of philosophy we read together at Balbec, the richness of the world of possibilities compared with the real world. Very well. It is the same again with the art of strategy. In a given situation there will be four plans that offer themselves, one of which the general has to choose, as a disease may pass through various phases for which the doctor has to watch. And here again the weakness and greatness of the human elements are fresh causes of uncertainty. For of these four plans let us assume that contingent reasons (such as the attainment of minor objects, or time, which may be pressing, or the smallness of his effective strength and shortage of rations) lead the general to prefer the first, which is less perfect, but less costly also to carry out, is more rapid, and has for its terrain a richer country for feeding his troops. He may, after having begun with this plan, which the enemy, uncertain at first, will soon detect, find that success lies beyond his grasp, the difficulties being too great (that is what I call the element of human weakness), abandon it and try the second or third or fourth.