This is the first and, unfortunately, so far the only book in our philosophical literature specifically devoted to deception - such a widespread phenomenon that permeates all pores of our personal and public life. The fundamental value of truth is clear to everyone. But imagine what would happen in people's lives, in politics, economics, etc., if suddenly all people stopped deceiving and spoke only the truth? The author set as his goal: to consider and, if possible, streamline the extremely diverse manifestations of deception, to comprehend such phenomena such as virtuous deception, half-truths, self-deception, based on philosophical, psychological, historical materials and works of fiction. The appendix contains articles that allow you to deepen your understanding of certain issues of the topic under discussion.