War is politics by other means.

It should be noted that the seeds of wisdom that are to bear fruit in the intellect are sown less by critical studies and learned monographs than by insights, broad impressions, and flashes of intuition.

A general who allows himself to be decisively defeated in an extended mountain position deserves to be court-martialled.

[...] to introduce into the philosophy of war itself a principle of moderation would be an absurdity

Many intelligence reports in war are contradictory; even more are false, and most are uncertain.

Lastly, the great uncertainty of all data in War is a peculiar difficulty, because all action must, to a certain extent, be planned in a mere twilight, which in addition not unfrequently — like the effect of a fog or moonshine — gives to things exaggerated dimensions and an unnatural appearance.

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