In the classical tradition, the concept of intelligence is often understood through the complementary concepts of “reason” (ratio) and “intellect” (intellectus). These are not separate faculties but, as Saint Thomas Aquinas explains, they are two modes in which the same intelligence operates: “The term intellect is inferred from the inward grasp of the truth, while the name reason is taken from the inquisitive and discursive process.”[18] This concise description highlights the two fundamental and complementary dimensions of human intelligence. Intellectus refers to the intuitive grasp of the truth—that is, apprehending it with the “eyes” of the mind—which precedes and grounds argumentation itself. Ratio pertains to reasoning proper: the discursive, analytical process that leads to judgment. Together, intellect and reason form the two facets of the act of intelligere, “the proper operation of the human being as such.”