Niccolò Machiavelli,
The Annotated Prince — Chapter X: How the Strength of All Princedoms Should Be Measured
(1513)
“ To make the matter clearer, I pronounce those to be able to stand alone who, with the men and money at their disposal, can get together an army fit to take the field against any assailant; and, conversely, I judge those to be in constant need of help who cannot take the field against their enemies, but are obliged to retire behind their walls, and to defend themselves there. ”
