Ronald Dworkin was an influential American legal philosopher and scholar, known for his work in the fields of law and political theory. Born in 1931, he served as a professor at several prestigious institutions, including New York University and Harvard University. Dworkin is best known for his critique of legal positivism and his theory of law as integrity, which emphasizes the importance of moral principles in legal interpretation. Dworkin authored several significant books, including Taking Rights Seriously and Law's Empire, where he argued that legal decisions should reflect moral values and individual rights. His ideas have had a lasting impact on legal theory, shaping discussions around the relationship between law and morality.