Scott Nearing,
Civilization and Beyond: Learning from History
(1975)
“ Grab and keep, in a period of rapid economic expansion, led each of the burgeoning European empires to the zealous defense of its frontiers as the first principle of imperial policy. The second principle: geographical expansion, followed as a matter of course. Expansion inside Europe, with its tight frontier defenses, meant war with aggressive rivals. Expansion abroad, especially in Asia and Africa, was less costly and might prove more profitable. ”
