1921 – 2002
John Rawls (1921–2002) was an American political philosopher widely regarded as the most influential political theorist of the twentieth century. His landmark work A Theory of Justice (1971) revived liberal political philosophy by grounding principles of justice in a hypothetical social contract behind a 'veil of ignorance.' His later work Political Liberalism refined how justice can be sustained in pluralistic democratic societies.
Developed the 'original position' and 'veil of ignorance' as tools for deriving principles of justice
Formulated the Difference Principle: inequalities are just only if they benefit the least advantaged
Revived normative political philosophy as a rigorous academic discipline with A Theory of Justice (1971)
Introduced 'reflective equilibrium' as a method for moral and political justification
Developed 'political liberalism' as a framework for maintaining justice amid reasonable pluralism