For the spread and endurance of an idea the originator is dependent on the self-development of the receivers and transmitters.

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

The most consistently successful commanders, when faced by an enemy in a position that was strong naturally or materially, have hardly ever tackled it in a direct way. And when, under pressure of circumstances, they have risked a direct attack, the result has commonly been to blot their record with a failure.

For the spread and endurance of an idea the originator is dependent on the self-development of the receivers and transmitters.

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

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.