André de Staercke reminded the North Atlantic Council (NAC) of the motto’s peculiar history during his farewell address as Dean of the Council and Permanent Representative of Belgium on 29 January 1976.
“Many years ago, when the Headquarters of the Alliance was transferred to Porte Dauphine in Paris [December 1959], Mr. Paul-Henri Spaak – who was then Secretary General – asked me to give him in Latin - that fine Latin prose that carries out wisdom within it - a maxim reflecting in a few words the collective aim of the Atlantic Alliance and the independence of its members.” (para. 3, p17-18; C-R(76)4.pdf)
Mr. de Staercke recounted that he had seen this maxim during his childhood at the Palazzo del Podesta in San Gimignano, Italy. It was engraved on the back of the seat of the city’s chief magistrate.
“Eis fuit domi industria, foris justum imperium, animus in consulendo liber; neque libidini, neque delicto obnoxious.” ("They had industry at home, a just rule abroad, in counsel an independent spirit subject neither to passion nor to crime”).
These words are attributed to Marcus Porcius Cato (also referred to as Cato the Censor, 234 BC – 149 BC), a Roman politician and philosopher renowned for his rigid morals and principles. His maxim was commonly used in medieval times in northern and central Italy to adorn the facades of town halls and council chambers in praise of good governance.
Mr. Spaak was deeply impressed by Mr. De Staercke’s description and thought the Latin maxim should be adopted as the NATO motto. His wish was fulfilled when NATO moved to the Porte Dauphine building in 1959. The motto was placed in the main conference hall, which served as a hub for all the meeting rooms. Participants to upcoming NATO meetings were always reminded of it on their way into the Council chambers.