The book "Lectures on the Philosophy and Practice of Slavery as Manifested in the Division of Domestic Slavery in the United States, with the Duties of Masters to Slaves" by the author William A. Smith is a study devoted to the analysis of the historical phenomenon of slavery in American society. The author examines the philosophy underlying slavery, its practical implementation in the household, and the duties incumbent upon masters in relation to slaves. In his lectures, Smith analyzes not only the institution of slavery as a social and economic phenomenon, but also reveals its philosophical, moral and legal aspects. The author examines the complex relationship between masters and slaves, emphasizing the importance of fulfilling the duties of masters to their subjects. "Lectures on the Philosophy and Practice of Slavery" is an important work that helps to better understand the complex aspects of the socio-cultural and economic reality of past eras. The author pays attention to the problems of justice, dignity and human freedom, developing his own concept of interaction between classes, which is based on a deep analysis of internal morality and ethics. This book invites readers to think seriously about the past, and also stimulates discussion of important questions of morality, justice and dignity in the context of human relations.