The author examines the role that the idea of fairness plays in theories of social justice. Referring to the fundamental theoretical contribution of John Rawls, he focuses on the connections between the two principles of justice as fairness and offers an interpretation that combines an intuitive argument in favor of the principles with an analytical argument and the theory of collective choice. In conclusion, he cites cases of the extension of the concept of justice as fairness, stressing in particular the importance of and difficulty in establishing a coherent idea of global justice.
