While the nominal strength of a country is represented by its numbers and resources, this muscular development is dependent on the state of its internal organs and nerve-system - upon its stability of control, morale, and supply.

The higher level of grand strategy [is] that of conducting war with a far-sighted regard to the state of the peace that will follow.

Direct experience is inherently too limited to form an adequate foundation either for theory or for application. At the best it produces an atmosphere that is of value in drying and hardening the structure of thought. The greater value of indirect experience lies in its greater variety and extent. History is universal experience, the experience not of another, but of many others under manifold conditions.

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

Loss of hope rather than loss of life is what decides the issues of war. But helplessness induces hopelessness.

The most dangerous error is failure to recognize our own tendency to error.

The predominance of moral factors in all military decisions. On them constantly turns the issue of war and battle. In the history of war they form the more constant factors, changing only in degree, whereas the physical factors are different in almost every war and every military situation.