There are various opinions concerning the epistemological entity and methodology of the Transcendent Philosophy. Recently, a group of thinkers, while trying to acquit Mulla Sadra's works from the charges of contradiction and incoherence, have aimed at studying and clarifying his philosophical methodology. Ha'iri Yazdi believes that the Transcendent Philosophy employs the superior language of the principality or existence, which inquires into the topical languages of previous philosophical systems. He claims that if we assume that the Transcendent Philosophy is ultra-language, we can acquit it from the charges of eclecticism and infirmity and explain its innovative aspects.Ultra-language and topical language, which are among the key concepts in Tarski's semantics, have also been employed concerning formalized languages. In the particular sense of the word, ultra-language cannot be matched with the Transcendent Philosophy; however, the existence of ultra-language in the sense of a kind of proceeding beyond something is acceptable in certain parts of the Transcendent Philosophy. However, this theory does not seem enough in clarifying the nature and methodology of the Transcendent Philosophy, and, in order to fill the existing blanks in this regard, we require more complete theories.