The article presents and overviews the main concepts of "A Theory of Justice" by J. Rawls such as justice, subject of justice, ideas of cooperation and well ordered society, veil of ignorance, rationality of the original situation, principles of justice, the rule of maximum minimorum. The author presents an analysis of the basic notions of "A Theory of Justice" by evaluating the two aspects of comprehensiveness and avoidance of error. The evaluation of comprehensiveness proceeds along the lines of discussion with some critics of J. Rawls such as Benjamin R. Barber who claims that J. Rawls does not manage to choose between the influence of I. Kant and Th. Hobbes. The author argues that the theory of justice pre-sen-ted by Rawls satisfies the...