Abstract: If we consider the process of perception to be the result of the interaction of the three elements of subjectivity, belonging, and cognition, many of the theories proposed in the field of Islamic thought regarding science and perception can be organized around the two ratios existing between the three mentioned elements. A number of important theories are responsible for explaining the relationship between science and perception and its verification.And some theories refer to the relationship between perception and identification. The theory of "wise and reasonable union" is one of those theories that refer to the recent relationship. In this article, the theory of wise and reasonable union has been examined from a historical perspective. Before the historical report, the author clarified the terms and concepts used in the title of the discussion.
Machine summary: Before examining the historical course of the "wise and reasonable union" theory, it is necessary to first examine the central terms of this discussion, which are the three words "union", "wise" and "reasonable", because each of these words in the literature Our philosophy is used colloquially for multiple meanings. But the fact that we said that the mentioned assumption does not hold is due to the fact that Mulla Sadra and other speakers of the theory of rational and reasonable unity, aside from the rules of speech in the use of the word "unity" in expressing the discussed theory, have explicitly defined the unity they are looking for.The union intended by Mulla Sadra in the theory of the union of the wise and reasonable, at the beginning of the process of cognition, in which the passive aspect of the self is the dominant aspect, is of the type of union of matter and form, and at the stage of self-activity, this union is of the type of union of truth and subtlety [Sadruddin Shirazi 1981] Volume 3: 324, 325; Lithograph: 212-211 [. Sadra also mentions the difficulty of this issue in Esfar, then he mentions a revelation that inspired him with the theory of rational and rational unity.]Sadr al-Din Shirazi, 1981, vol. 3: 312-313. Professor Mehdi Haeri Yazdi has analyzed this theory from a different point of view in two books, General Science and Explorations of Theoretical Reason, as well as in an article he published in the Journal of Articles and Reviews of the Faculty of Theology and Islamic Studies of Tehran University.