"On the Duty of Civil Disobedience" is an essay-manifesto of the famous American writer Henry David Thoreau about the human right to speak out against the untruth and injustice of the government. In this book, the author explains his philosophy of civil disobedience in a reasoned way, calling on every citizen to act in accordance with his beliefs and principles. Thoreau believed that a person has the right to refuse to obey illegal laws and to speak out against injustice, even if it is contrary to generally accepted norms. In his book, Thoreau addresses the reader with provocative thoughts and questions, stimulating him to analyze his own beliefs and choices. The book "On the Obligation of Civil Disobedience" keeps its ideas relevant even today, prompting readers to think about their own attitude to power, law and justice.