The exploring Mulla Sadra's Principiality of Existence in Avicenna Philosophy

Principiality of Existence in Transcendent theosophy has two meanings and both are attributed to Mulla Sadra. In the first meaning, essence unlike existence does not exist outside at all and only exist in mind. But in the second meaning essence following becoming, exists out of mind. The Principality of Existence in first meaning is not attributed to Avicenna at all, because he believes in the realization of essence and he doesn’t consider it exclusively mental. The Principality of Existence in second meaning although is in closer relationship with Avicenna philosophy but is not attributed to Avicenna with all its principles and results, because he believes in the plurality of beings and instead of believing in the unity of essence and existence in the external world, he believes that existence is accidental. Also, concerning the results and outcomes of the debate, he claims that beings are multiplied truths and the necessary being is the simple being who has no essence and we can’t define him through genus and difference, instead of claiming that the necessary being is the truth of existence and this truth is unite.