“The more closely [the German army] converged on [Stalingrad], the narrower became their scope for tactical manoeuvre as a lever in loosening resistance. By contrast, the narrowing of the frontage made it easier for the defender to switch his local reserves to any threatened point on the defensive arc.”

For even the best of peace training is more theoretical than practical experience … indirect practical experience may be the more valuable because infinitely wider.

While the nominal strength of a country is represented by its numbers and resources, this muscular development is dependent on the state of its internal organs and nerve-system – upon its stability of control, morale, and supply.

If you wish for peace, understand war.

Direct pressure always tends to harden and consolidate the resistance of an opponent.

The effect to be sought is the dislocation of the opponent’s mind and dispositions – such an effect is the true gauge of an indirect approach.

The more usual reason for adopting a strategy of limited aim is that of awaiting a change in the balance of force … The essential condition of such a strategy is that the drain on him should be disproportionately greater than on oneself.

No man can exactly calculate the capacity of human genius and stupidity, nor the incapacity of will.

A complacent satisfaction with present knowledge is the chief bar to the pursuit of knowledge.

The higher level of grand strategy [is] that of conducting war with a far-sighted regard to the state of the peace that will follow.

To foster the people’s willing spirit is often as important as to possess the more concrete forms of power.

In the case of a state that is seeking not conquest but the maintenance of its security, the aim is fulfilled if the threat is removed – if the enemy is led to abandon his purpose.

The unexpected cannot guarantee success, but it guarantees the best chance of success.

The practical value of history is to throw the film of the past through the material projector of the present on to the screen of the future.

If you find your opponent in a strong position costly to force, you should leave him a line of retreat as the quickest way of loosening his resistance. It should, equally, be a principle of policy, especially in war, to provide your opponent with a ladder by which he can climb down.

It is only to clear from history that states rarely keep faith with each other, save in so far (and so long) as their promises seem to them to combine with their interests.

[The] aim is not so much to seek battle as to seek a strategic situation so advantageous that if it does not of itself produce the decision, its continuation by a battle is sure to achieve this. In other words, dislocation is the aim of strategy.

Don’t take too much advice.