The book "No and Yes" is a fundamental work of Mary Baker Eddy, which helps the reader to understand the issues of faith, values and views of life. The author addresses the reader with a deep understanding of human nature and explains what inner beliefs and questions each of us may have in the process of self-reflection. "No and Yes" is a portrait of the modern world through the prism of faith and spirituality, which prompts the reader to think about the deeper aspects of life and one's own identity.