In this paper, I investigate the foundations of Plotinus’ innovative theory that prime matter is unaffectable. I begin by showing that Plotinus’ main arguments for this thesis (in Ennead 3.6) all rely upon the controversial assumption that the properties prime matter underlies are not properties of prime matter itself. It is then argued that prime matter’s privation of sensible qualities has its conceptual basis in an idiosyncratic understanding of form-matter composition generally, and its primary doctrinal basis in Aristotle’s critical reports (...) on the Platonists’ substratum in Physics 1.9. While Plotinus finds Platonic authority for unaffectible matter in the Receptacle passage of the Timaeus, it is Aristotle’s testimony that provides the crucial impetus for reading that text in this way. On this basis, Plotinus develops a Platonist conception of form’s inherence in matter with distinctively non-Aristotelian features. (shrink)

Plotinus treats certain pre‑philosophical concepts as reliable or promising starting‑points for philosophical study. This article studies the way in which he, in the act of philosophizing, conceives of the passage from an unclear understanding, a kind of pre‑concept, to a better, philosophical conception. What are the sources of this passage? What is the role of data given by sense‑perception? In what way are innate conceptual and cognitive capacities involved? It will be argued that the methodology suggested is a Platonic version (...) of the Stoic appeal to common notions (koinai ennoia). Moreover, Plotinus seems to maintain several features of the empirical original. The concepts discussed are not primarily introspected or intuited, but seem to result from both experience and from innate tendencies. The bottom‑up approach of scrutinizing the combination of inquiries in the Enneads (and in a commentary of Proclus) and the methodological remarks made within these same inquiries, exposes, further, an interesting list of concepts significant for the Neoplatonic theory‑building : freedom, oneness, time and eternity, as well as good and evil. (shrink)

This paper discusses the role of innate concepts derived from Intellect in Plotinus’ account of cognition of the sensible realm. Several passages have been claimed as evidence for such innateness, but an analysis of them shows that they do not support this claim. It is tentatively suggested that, nevertheless, some very general concepts such as difference, sameness and being are integral to the faculty of sense and play a crucial role in concept formation. It is further argued that reasoning about (...) the sensible realm takes place to a large extent without the involvement of the higher realms of Plotinus’ hierarchy of being. Clearly, however, for value concepts such as those of goodness, justice and beauty human beings are dependent upon an illumination from Intellect. (shrink)

RESUMO A percepção sensível é a faculdade cognitiva da alma, que recebe, por meio dos órgãos dos sentidos, um conjunto de características dos objetos, tais como altura, largura, cor, cheiro, som, e também aquilo que pode nos afetar, como, por exemplo, a dor proveniente de uma queimadura, ou o prazer causado por uma melodia. Compreender o processo perceptivo, em relação aos seus diferentes tipos de objetos - afecções, qualidades e impressões - é o escopo deste estudo. ABSTRACT Sensible perception is (...) the cognitive faculty of the soul that receives, through sensorial organs, a set of characteristics of the objects, such as height, width, color, odor, sound, and also that which can affect us as, for instance, the pain that arises from being burnt or the pleasure caused by a melody. Understanding the perceptive process in relation with its different kinds of objects - affections, qualities, and impressions - is the aim of this study. (shrink)

This paper focuses on Plotinus’ account of the soul’s cognitive powers of sense perception and discursive thought, with particular reference to the treatises 3. 6 [26], 4. 4 [28] and 5. 3 [49] of the Enneads . Part 1 of the paper discusses Plotinus’ direct realism in perception. Parts 2 and 3 focus on Plotinus’ account of knowledge in Enneads 5. 3 [49] 2–3. Plotinus there argues that we make judgements regarding how the external world is by means of discursive (...) reasoning. This latter claim, however, is in tension with what Plotinus argues elsewhere regarding our perceptual apprehension of the external world (3. 6 [26] 1; 4. 4 [28] 23). This puzzle is addressed in Part 3 of the paper, which investigates Plotinus’ view that there exist some sense perceptions of which we are unaware. Finally, Part 4 looks at Plotinus’ understanding of Plato’s famous wax block analogy, in 5. 3 (49). The overall conclusion of the paper is that Plotinus’ account of knowledge is radically different from that of the Cartesian tradition. (shrink)

This paper argues that the duality of phantasia consists not in its being divided between two faculties, but in its being the meeting point of two representations. First it is argued that Plotinus’ theory, according to which the representation is a judgement, rests on his reading of Theaetetus 184c–187a and its criticism in De Anima III, 2–3. Second, it is argued that the ‘image’ in which the Plotinian representation consists follows the perceptual judgement instead of preceding it. Third, it is (...) argued that there is neither a sub-sensitive faculty of phantasia nor a sub-sensitive representation. Then, the exteriority of the objects of representation with respect to the soul is discussed. Finally, an interpretation is proposed concerning the necessity for Plotinus to posit two representations of the same object. (shrink)