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.
B. H. Liddell HartAn army should always be so distributed that its parts can aid each other and combine to produce the maximum possible concentration of force at one place, while the minimum force necessary is used elsewhere to prepare the success of the concentration.
B. H. Liddell HartThe military weapon is but one of the means that serve the purposes of war: one out of the assortment which grand strategy can employ.
B. H. Liddell Hart