Intellect is a faculty of the human mind that enables reasoning, abstraction, conceptualization, and judgment. It enables the discernment of truth and falsehood, as well as higher-order thinking beyond immediate perception. Intellect is distinct from intelligence, which refers to the general ability to learn, adapt, and solve problems, whereas intellect concerns the application of reason to abstract or philosophical thought.
In philosophy, intellect (Ancient Greek: dianoia) has often been contrasted with nous, a term referring to the faculty of direct intuitive knowledge. While intellect engages in discursive reasoning, breaking down concepts into logical sequences, nous is considered a higher cognitive faculty that allows for direct perception of truth, especially in Platonism and Neoplatonism. Aristotle distinguished between the active intellect (intellectus agens), which abstracts universal concepts, and the passive intellect, which receives sensory input.