According to the principle of imamate in Shia, it is indispensable to obey of the prophet of Allah and of those possessed of authority. Shia clergy believes that the conception of the term "those possessed of authority" denoted on innocent Shia imams. When the Imam is absent, the valy faghih is in charge of leadership of society. In other words, religious leaders undertake the responsibility of the imamate. There is more emphasizing on the dignity ("karamat") and the high value of humans which is along with freedom and responsibility. The principle of dignity is a necessary condition of the Islamic republic in terms of existence, but there are many meanings for the term dignity. Sometimes it refers to generosity, nobleness and honor, but Islam considers it two sorts of dignity for human beings, namely essential or innate dignity and acquired dignity. According to innate dignity, human being possessed of the right of living among other creatures. The principle is also mentioned by the Universal Declaration of Human Rights in 1948. On the basis of acquired dignity, the human is able to pass the degrees of perfection with the aid of actuality of his potentialities and talents.