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.

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.

The enemy of a good plan is the dream of a perfect plan.

Courage, above all things, is the first quality of a warrior.

Kind-hearted people might of course think there was some ingenious way to disarm or defeat an enemy without too much bloodshed, and might imagine this is the true goal of the art of war. Pleasant as it sounds; it is a fallacy that must be exposed: War is such a dangerous business that the mistakes which come from kindness are the very worst.

The heart of France lies between Brussels and Paris.

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