The objective of this article is to consider from the work Leviatã of the philosopher Thomas Hobbes, on the necessity of the creation of the civil State like form of guaranteeing the protection and defense of the men, as well as, of analysing the paper of the passions in the passage of the state of nature for the Commonwealth, giving distinction for the passion I 'want'. The problem to be investigated is if really the passions are or not essential in the creation, of the marital status proposed by Hobbes. The theory is of the fact that the passions lead the men to be wolves a few for others in the state of nature, but also, they are put like cause motivating of the civil society.