A complacent satisfaction with present knowledge is the chief bar to the pursuit of knowledge.

To foster the people's willing spirit is often as important as to possess the more concrete forms of power.

No man can exactly calculate the capacity of human genius and stupidity, nor the incapacity of will.

If you want peace, understand war.

For the spread and endurance of an idea the originator is dependent on the self-development of the receivers and transmitters.

The only thing harder than getting a new idea into the military mind is to get an old one out.

In war the chief incalculable is the human will, which manifests itself in resistance, which in turn lies in the province of tactics. Strategy has not to overcome resistance, except from nature. Its purpose is to diminish the possibility of resistance, and it seeks to fulfil this purpose by exploiting the elements of movement and surprise.