...as man under pressure tends to give in to physical and intellectual weakness, only great strength of will can lead to the objective.

This tremendous friction which cannot, as in mechanics, be reduced to a few points, is everywhere in contact with chance, and brings about effects that cannot be measured just because they are largely due to chance.

War is only caused through the political intercourse of governments and nations - war is nothing but a continuation of political intercourse with an admixture of other means.

War is the province of danger.

Action in war is like movement in a resistant element. Just as the simplest and most natural of movements, walking, cannot easily be performed in water, so in war, it is difficult for normal efforts to achieve even moderate results.

To secure peace is to prepare for war.

The more a leader is in the habit of demanding from his men, the surer he will be that his demands will be answered.