The present memo intends to address Dr. Talebzadeh in March 1399 on "Idealism and Realism from the Perspective of Allameh Tabatabai" at the Iranian Society of Wisdom and Philosophy, Qom Branch. An issue he has debated for years. It might have been better to cover this lesson on a case-by-case basis, but because this lecture is not enough as a published article with references and explanations, I tried to extract the main topics from it and clarify some key topics in general. . The focus of this article is the discussion of credentials in Islamic philosophy and its relationship with the first philosophy, and if attention is paid to the sayings of Western philosophers, because it deviates from the main topic of the article, it was discussed extensively and briefly, and its elaboration requires other writings. Dear readers, please read Dr. Talebzadeh's speech at Simafker before reading this article.