John Rawls
1921 CE – 2002 CE · Contemporary Era
“A just society is one we would design from behind a 'veil of ignorance' about our own position in it.”
Biography
John Rawls was an American political philosopher whose A Theory of Justice (1971) is the most important work of political philosophy published in the 20th century. Born in Baltimore, he served as an infantryman in the Pacific during World War II, witnessing the aftermath of Hiroshima a an experience that deeply affected his thinking about justice and the arbitrary distribution of fortune. He spent most of his career at Harvard, where he was known as a modest, generous, and intellectually rigorous teacher. His writing style was deliberate and architectonic p he built arguments with painstaking care, anticipating objections and refining his positions over decades. A Theory of Justice revitalized the social contract tradition (which had been considered dead since the rise of utilitarianism) and provided a systematic alternative to both utilitarian and libertarian theories of justice. His later work, Political Liberalism, addressed how a just society can be stable when its citizens hold deeply different religious and philosophical views.
Major Works
Key Arguments
Click “Philosophy 101” to read the full exploration of each argument.
The Veil of Ignorance
Rawls asked: what principles of justice would rational people choose if they did not know their own position in society? Imagine you are designing the rules of a society from behind a 'veil of ignorance', you do not know whether you will be rich or poor, talented or untalented, healthy or disabled, male or female, Black or white. You know general facts about human psychology and economics, but nothing about your particular circumstances. Rawls argued that rational people in this 'original position' would not gamble, they would choose principles that protect them even in the worst case, since they might end up at the bottom. This thought experiment is designed to filter out bias: if you don't know whether you'll be a billionaire or homeless, you'll choose rules that treat both fairly.
Why it matters: The most influential thought experiment in 20th-century political philosophy. It provides a rigorous method for thinking about fairness that strips away self-interest, and it revitalized the social contract tradition by giving it a powerful new foundation.
The Two Principles of Justice
Behind the veil of ignorance, Rawls argued, rational people would choose two principles. The first (and lexically prior, meaning it cannot be traded away for other goods) is that each person has an equal right to the most extensive system of basic liberties compatible with the same liberties for all, freedom of speech, conscience, assembly, and political participation. The second principle governs economic and social inequalities: they are permissible only if they are (a) attached to positions and offices open to all under conditions of fair equality of opportunity, and (b) arranged so that they benefit the least advantaged members of society (the 'difference principle'). This means inequality is not inherently unjust, a society may pay doctors more than janitors, but only if the resulting arrangements make the worst-off people better off than they would be under any alternative system. Pure equality is not required; what is required is that no one benefits from the system at the expense of those at the bottom.
Why it matters: Provided a systematic and rigorous framework for evaluating the justice of social and economic institutions. The difference principle, in particular, has been enormously influential in debates about taxation, welfare, healthcare, and the moral limits of inequality.
Public Reason and Overlapping Consensus
In his later work Political Liberalism, Rawls confronted the problem of pluralism: in a free society, citizens hold deeply different and incompatible religious, philosophical, and moral doctrines. How can such a society agree on principles of justice? Rawls argued that political justification must be conducted in terms of 'public reason', arguments that appeal to values and principles that all reasonable citizens can accept, regardless of their comprehensive worldview. A Catholic, a Muslim, an atheist, and a libertarian may disagree deeply about the good life, but they can agree on basic principles of political justice, liberty, equality, fairness, for their own reasons. This 'overlapping consensus' provides stability without requiring everyone to share the same beliefs. Citizens should not impose their private religious or philosophical convictions through law; political arguments must be conducted in terms that others can reasonably accept.
Why it matters: Addressed a central question in contemporary democratic theory: how can deeply divided societies maintain political unity? Rawls's framework for public reason and overlapping consensus has shaped debates about religion in politics, multiculturalism, and the foundations of liberal democracy.
Lasting Influence
Revitalized political philosophy. His theory of justice influenced law, policy, economics, and global governance. Nozick's entitlement theory provides the most powerful counterargument: that the veil manufactures egalitarian conclusions rather than discovering them, and that individual rights function as side-constraints that patterned distribution cannot override.
Your Reading Path
The Companion Guide
Seven eras of philosophy in one volume — reading lists, key terms, journal prompts · $19.99