Salus populi suprema lex esto
Salus populi suprema lex esto (Latin: "The health [welfare, good, salvation, felicity] of the people should be the supreme law"; "Let the good [or safety] of the people be the supreme [or highest] law"; or "The welfare of the people shall be the supreme law") is a maxim or principle found in Cicero's De Legibus (book III, part III, sub. VIII).