The book Leviathan by Thomas Hobbes is a philosophical treatise written in the 17th century. In his work, the author explores the nature of society, power and politics. Hobbes argues for his concept of the social contract, according to which people must submit to sovereign rule in order to ensure peace and order. "Leviathan" is considered as one of the key works of political theory, which influenced the development of Western European philosophy and the state system. The book remains relevant even today, because it encourages readers to think about the essence of power and the nature of human society.