John Rawls is the most important political philosopher of the twentieth century, and almost every serious argument about justice since 1971 responds to him. But his central book is long and technical, and his ideas evolved, so reading him in the right order saves a great deal of frustration. The plan is simple: read the landmark, then the shorter restatements and expert guides, then the critics who make his position sharper by opposing it.
This path treats Rawls as a thinker to master, presenting his defenders and challengers fairly.
The landmark
Begin with A theory of justice, Rawls' monumental argument that principles of justice are those we would choose behind a veil of ignorance, not knowing our own place in society. It is demanding but foundational. His later Political liberalism revises the project to ask how a just society can hold together amid deep disagreement about the good life, an essential companion.
Restatements and guides
Because the original is dense, use the aids Rawls and others provided. JUSTICE AS FAIRNESS, A RESTATEMENT, PART 1: FUNDAMENTAL IDEAS is Rawls' own clearer, later summary of his theory, and the best distillation in his voice. Then two guides from the leading scholar: Rawls, Samuel Freeman's thorough single-author study, and The Cambridge companion to Rawls, the essay collection he edited, which together map the whole system.
Critics and extensions
Rawls is best understood through the arguments against him. Anarchy, State, and Utopia, Robert Nozick's libertarian reply, and Liberalism and the Limits of Justice, Michael Sandel's communitarian critique, are the two classic challenges. Creating Capabilities: The Human Development Approach, Martha Nussbaum's alternative framework, pushes beyond him toward capabilities. For context, Lectures on the history of political philosophy shows Rawls reading his predecessors, and Reasons and Persons, Derek Parfit's landmark on personal identity and ethics, sits beside him as a peak of the same era's philosophy.
Read in order, Rawls becomes tractable and the whole modern justice debate opens up. Follow the full path to take the books in sequence.