The book "A treatise on human nature: an attempt to introduce the experimental method into moral subjects; and Dialogues on natural religion" by the famous philosopher David Hume is a fundamental work that changed the development of philosophy. In the book, the author explores the nature of the human mind, emotions, moral principles, and religion using an experimental approach. In the first part of the treatise, Hume highlights what ideas and knowledge we can derive from observations of the world around us and our own experience. The author demonstrates how a person forms his views, beliefs and values based on perception and analysis of the surrounding environment. In the second part of the book "Dialogues on Natural Religion" Hume examines the question of the existence of God, the nature of religious beliefs and faith. The author conducts a dialogue between different characters who present different arguments and views on these important issues. The general idea of the book is that in order to understand human nature, morality and religion, one must apply an empirical approach based on observation and research. A Treatise on Human Nature is an important work not only for philosophy, but also for religious and moral debate, to which anyone interested in the deeper aspects of human nature can turn.