ABSTRACT The aim of the following lines is to investigate whether the relation between the human and the agent intellect found in Avicenna’s On Soul V (Kitāb al-Nafs) could compromise the epistemological autonomy of the human intellect or not. Since I have already discussed the collaborative activity between the rational soul and the internal senses, the following analysis is entirely devoted to the limits of the causal interaction between both intellects. Finding these limits requires understanding the type of causality performed (...) by the agent intellect from Avicenna’s use of the analogy between the sun and the vision. (shrink)