Abstract

This article demonstrates that Ibn Sīnā’s theory of experience (taǧriba) requires a cross-reference between logic and psychology. Following the Basran linguistic tradition, he paraphrases derived names (ism muštaqq) into the li-x y formula: for example, ʿālim (“knowing”) is paraphrased into lahu ʿilm (“an act of knowing belongs to him”). His theory of experience employs this formula for arranging observed phenomena into a certain form of a syllogism and describing functions of the brain’s inner senses. Ibn Sīnā arranges observed phenomenon into the li-x y formula or the proposition of which a predicate is a derived name of y. Meanwhile, he holds that the sense of recollection is involved in the process of experience. Recollection is an inner sense of the brain, which preserves maʿnā perceived by the sense of estimation. Estimation means to perceive maʿnā (y) that inheres in a subject (x), and to make a judgment about x based on y. Thus, in this process, the analysis of derived names arranges observed phenomena into a rational order, and the inner sense establishes the causation between apprehension and logical assertion. The article concludes by discussing the relation of this philosophy to medicine.