Written during the turmoil of the English Civil War, Leviathan is an ambitious and highly original work of political philosophy. Claiming that man´,s essential nature is competitive and selfish, Hobbes formulates the case for a powerful sovereign&mdash,or "Leviathan"&mdash,to enforce peace and the law, substituting security for the anarchic freedom he believed human beings would otherwise experience. This worldview shocked many of Hobbes´,s contemporaries, and his work was publicly burnt for sedition and blasphemy when it was first published. But in his rejection of Aristotle´,s view of man as a naturally social being, and in his painstaking analysis of the ways in which society can and should function, Hobbes opened up a whole new world of political science.