Bonum vero commune summam complectitur earum vitae socialis condicionum, quibus homines, familiae et consociationes, suam ipsorum perfectionem plenius atque expeditius consequi possint.
Indeed, the common good embraces the sum of those conditions of the social life whereby men, families and associations more adequately and readily may attain their own perfection.
Second Vatican Council – from the Pastoral Constitution “Gaudium et Spes – On the Church in the modern World” promulgated by His Holiness, pope Paul VI (Chapter IV, 74, December 7th, 1965)