The theory of the indirect approach operates on the line of least expectation.

In war the chief incalculable is the human will, which manifests itself in resistance, which in turn lies in the province of tactics. Strategy has not to overcome resistance, except from nature. Its purpose is to diminish the possibility of resistance, and it seeks to fulfil this purpose by exploiting the elements of movement and surprise.

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

While hitting one must guard ... In order to hit with effect, the enemy must be taken off his guard.

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.

In reality, it si more fruitful to wound than to kill. While the dead man lies still, counting only one man less, the wounded man is a progressive drain upon his side.

If you wish for peace, understand war.