In Shiite school, Imamate is one of the self-evident doctrinal principles, which is on the same level as prophethood. During the history of Shiism, many thinkers and intellectuals have considered this principle in philosophical and theological terms. They have comprehensively elaborated on the characteristics of those, who hold this position. Thus, the transcendental theosophy, as one of the major philosophical schools in the Islamic word, tries to explain and analyze the aspects and the status of Imamate. Mulla Sadra, along with the exponents of this school, has considered many significant issues concerned with Imamate, some of which are as follows: the demonstration of Imamate as one of the doctrinal foundations, the objectivity of the status of Imamate, Imam and the rational necessity of his existence, the method of choosing and ordaining someone as Imam, the philosophical basis of Imam's characteristics and their relationship between Imam himself, and the impossibility of not having.
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