Two qualities are indispensable: first, an intellect that, even in the darkest hour, retains some glimmerings of the inner light which leads to truth; and second, the courage to follow this faint light wherever it may lead.

War is nothing but a duel on a larger scale.

Four elements make up the climate of war: danger, exertion, uncertainty and chance.

The first and most important rule to observe...is to use our entire forces with the utmost energy. The second rule is to concentrate our power as much as possible against that section where the chief blows are to be delivered and to incur disadvantages elsewhere, so that our chances of success may increase at the decisive point. The third rule is never to waste time. Finally, the fourth rule is to follow up our successes with the utmost energy. Only pursuit of the beaten enemy gives the fruits of victory.

Talent and genius operate outside the rules, and theory conflicts with practice.

War is merely a continuation of politics.

There are times when the utmost daring is the height of wisdom.