The fourth volume of Plato's Collected Works includes works from the later period of his work: the dialogue "Politician", in which the theme of the ideal ruler is developed, the extensive "Laws", in which the theme of social utopia (started in the "State") continues, and "Post-Law". The volume also includes “Letters”, depicting the personality of the philosopher, and an Appendix, including two works by Neoplatonist authors and epigrams attributed to Plato. All texts have been newly edited. The publication is equipped with scientific apparatus. For readers interested in the history of philosophy.