Rule of Law"Rule of law"the idea that the law is the nation's sovereign authorityhas served as a cornerstone for constitutional theory and the jurisprudence of liberty. When law reigns over governors and the governed alike, a citizen need not fear capricious monarchs, arbitrary judges, or calculating bureaucrats. When a citizen obeys the law, life, liberty, and property are safe; when a citizen disobeys, the law alone will determine the appropriate punishment.