“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 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.

In war, the chief incalculable is the human will.

Guerrilla war is a kind of war waged by the few but dependent on the support of many.

In a campaign against more than one state or army, it is more fruitful to concentrate first against the weaker partner than to attempt the overthrow of the stronger in the belief that the latter’s defeat will automatically involve the collapse of the others.

To ensure attaining an objective, one should have alternate objectives. An attack that converges on one point should threaten, and be able to diverge against another. Only by this flexibility of aim can strategy be attuned to the uncertainty of war.

The implied threat of using nuclear weapons to curb guerrillas was as absurd as to talk of using a sledge hammer to ward off a swarm of mosquitoes.

The downfall of civilized states tends to come not from the direct assaults of foes, but from internal decay combined with the consequences of exhaustion in war.

I used to think that the causes of war were predominantly economic. I came to think that they were more psychological. I am now coming to think that they are decisively “personal,” arising from the defects and ambitions of those who have the power to influence the currents of nations.

The military weapon is but one of the means that serve the purposes of war: one out of the assortment which grand strategy can employ.

For whoever habitually suppresses the truth in the interests of tact will produce a deformity from the womb of his thought.

Air Power is, above all, a psychological weapon – and only short-sighted soldiers, too battle-minded, underrate the importance of psychological factors in war.

The predominance of moral factors in all military decisions. On them constantly turns the issue of war and battle. In the history of war they form the more constant factors, changing only in degree, whereas the physical factors are different in almost every war and every military situation.

The urge to gain release from tension by action is a precipitating cause of war.

It is thus more potent, as well as more economical, to disarm the enemy than to attempt his destruction by hard fighting … A strategist should think in terms of paralysing, not of killing.

The nearer the cutting off point lies to the main force of the enemy, the more immediate the effect; whereas the closer to the strategic base it takes place, the greater the effect.

This high proportion of history’s decisive campaigns, the significance of which is enhanced by the comparative rarity of the direct approach, enforces the conclusion that the indirect is by far the most hopeful and economic form of strategy.

Conversely, it is correct to say that bringing about peace would be the best way to fight terror.

I don’t believe the United States will be ready to join Russia in fighting terrorists in Syria.

Fight the fighters, not their wars.

The Russians are fighting for us, for the world, and for their self.

There’s a time when people give their words to each other it has to mean something. I’m a street cat. I’ve belonged in gangs and when you had a partner, you went down with your partner whether you won the fight or lost it. You went down together.

Al-Qaeda has one ideology and they go back to the same leadership in Afghanistan or in Syria or in Iraq. That’s the question. You have tens of thousands of foreigners, that’s definitely correct. We are fighting them on the ground and we know this.

A man from the west will fight over three things: water, women and gold, and usually in that order.

I’ve faced the grief, I’ve faced the anger, and I’m ready to keep up the fight because America is worth fighting for.