Politics is the womb in which war develops.

War is the province of danger.

War is...a trinity of violence, chance, and reason.

Modern wars are seldom fought without hatred between nations; this serves more or less as a substitute for hatred between individuals.

Every age has its own kind of war, its own limiting conditions and its own peculiar preconceptions.

If you entrench yourself behind strong fortifications, you compel the enemy seek a solution elsewhere.

Friction is the only concept that more or less corresponds to the factors that distinguish real war from war on paper.