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.
Natural hazards, however formidable, are inherently less dangerous and less uncertain than fighting hazards. All conditions are more calculable, all obstacles more surmountable than those of human resistance.
The most effective indirect approach is one that lures or startles the opponent into a false move – so that, as in ju-jitsu, his own effort is turned into the lever of his overthrow.
Air forces offered the possibility of striking a the enemy’s economic and moral centres without having first to achieve ‘the destruction of the enemy’s main forces on the battlefield’. Air-power might attain a direct end by indirect means – hopping over opposition instead of overthrowing it.