Public law regulates the interactions between individuals and the state, as well as the internal operations of the state, including constitutional, administrative, and criminal law. This area of law, originating in Roman jurisprudence, focuses on the authority of the state while ensuring that its actions are constrained by legal structures. Scholars such as Rudolf von Jhering emphasized public law's dependence on state enforcement, distinguishing it from private law, which relies on individual action.
William Blackstone pointed out the judiciary's responsibility to uphold general legal principles, while Joseph Story stressed the importance of constitutional protections to ensure the public interest takes precedence over private concerns. These viewpoints together demonstrate public law's role in maintaining a balance between state power and societal well-being, highlighting its continued significance in legal and political discussions.