The theory of the indirect approach operates on the line of least expectation.

In war, the chief incalculable is the human will.

The urge to gain release from tension by action is a precipitating cause of war.

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

The easiest and quickest path into the esteem of traditional military authorities is by the appeal to the eye, rather than to the mind. The `polish and pipeclay' school is not yet extinct, and it is easier for the mediocre intelligence to become an authority on buttons, than on tactics.

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

I used to think that the causes of war were predominantly economic. I came to think that they were more psychological. I am now coming to think that they are decisively "personal," arising from the defects and ambitions of those who have the power to influence the currents of nations.