“An army marches on its stomach.”

“What are the conditions that make for the superiority of an army? Its internal organization, military habits in officers and men, the confidence of each in themselves; that is to say, bravery, patience, and all that is contained in the idea of moral means.”

“At the beginning of a campaign it is important to consider whether or not to move forward; but when one has taken the offensive it is necessary to maintain it to the last extremity. However skilfully effected a retreat may be, it always lessens the morale of an army, since in losing the chances of success, they are remitted to the enemy. A retreat, moreover, costs much more in men and materials than the bloodiest engagements, with this difference, also, that in a battle the enemy loses practically as much as you do; while in a retreat you lose and he does not.”

“A commander-in-chief cannot take as an excuse for his mistakes in warfare an order given by his sovereign or his minister, when the person giving the order is absent from the field of operations and is imperfectly aware or wholly unaware of the latest state of affairs. It follows that any commander-in-chief who undertakes to carry out a plan which he considers defective is at fault; he must put forward his reasons, insist on the plan being changed, and finally tender his resignation rather than be the instrument of his army's downfall.”

“It's the unconquerable soul of man, and not the nature of the weapon he uses, that ensures victory”

“You wish to sail a ship up stream by lighting a fire under its decks, I have no time for such nonsense.”

“One must indeed be ignorant of the methods of genius to suppose that it allows itself to be cramped by forms. Forms are for mediocrity, and it is fortunate that mediocrity can act only according to routine. Ability takes its flight unhindered.”