"Ethics. Part 3" is a fundamental work of the famous philosopher Benedict Spinoza, which consists of five parts ("Parts on the nature of man", "Parts on the nature of the human mind", "Parts on the will and power of man", "Parts on a person in society" and "Parts about justice and freedom"). In this book, the author examines the issues of ethics, morality and justice through the prism of his philosophical system. Spinoza analyzes the nature of man, his attitude to himself, to other people and to society as a whole. It reveals important aspects of the ethical life, emphasizing reason and inner freedom as the basis for justice. The author addresses issues of ethical norms, moral values, good and evil, relativism and universalism. Spinoza's "Ethics. Part 3" is an important work that opens the reader to deep reflections on the essence of human morality and relationships in society."