[The cause of inaction in war] ... is the imperfection of human perception and judgment which is more pronounced in war than anywhere else. We hardly know accurately our own situation at any particular moment while the enemy's, which is concealed from us, must be deduced from very little evidence.
Carl von ClausewitzIntelligence alone is not courage, we often see that the most intelligent people are irresolute. Since in the rush of events a man is governed by feelings rather than by thought, the intellect needs to arouse the quality of courage, which then supports and sustains it in action.
Carl von ClausewitzWhere absolute superiority is not attainable, you must produce a relative one at the decisive point by making skillful use ofwhat you have.
Carl von ClausewitzGiven the same amount of intelligence, timidity will do a thousand times more damage than audacity
Carl von ClausewitzThe general unreliability of all information presents a special problem in war: all action takes place, so to speak, in the twilight, which, like fog or moonlight, often tends to make things seem grotesque and larger than they really are. Whatever is hidden from full view in this feeble light has to be guessed at by talent, or simply left to chance. So once again for the lack of objective knowledge, one has to trust to talent or to luck.
Carl von Clausewitz