The book "Heresy: Its Usefulness and Morality. Retreat and Justification" by the author Charles Bradlow is an important philosophical work that explores the concept of heresy, its impact on society and its moral consequences. Raising the issue of faith, doubt and freedom of thought, the author defends the right to differences of opinion and belief. The book is a heartfelt plea for understanding and tolerance, demonstrating the importance of diversity of opinion in a world where truth can be found through discussion and open dialogue. "Heresy: Its Usefulness and Morality. Retreat and Justification" is an invitation to reflect on one's own beliefs and attitude to the opinions of others, which makes this book relevant even today.