In this article, I would like to present a brief overview of Aquinas’s philosophy of mind. I try to express the cognitive processes that this model of the mind describes in more modern terminology (e.g., I interpret ‘an image’ [phantasm] as the binding effect of monomodal representations of a perceived object). Characteristic of this model is the postulation, in the case of the human mind, of intellectual abstraction leading to concepts, which requires assuming the existence of the intellect in its active and passive aspects. In this context, a metaphysical conclusion can be drawn about the immortal nature of this intellect, according to Thomas. On the other hand, this model of the mind is not, to all appearances, a variant of Platonic-Cartesian dualism – Aquinas makes several arguments against dualism understood in this way, at least one of which was still raised by (non-Thomistic) critics of Descartes. In addition, Thomas points to the developmental aspect of the human mind and also attempts to describe the possible functioning of the intellect after death.