 Every form that has several capacities and operations […] requires its subject to have multiple organs in order to perform those operations; the soul has several faculties and several operations; therefore etc. […] [T]he vegetative faculty has the capacities of nutrition, growth, and generation; and these capacities have different operations: the capacity of nutrition must preserve the substance of what is nourished; the capacity of growth must lead it to a perfect quantity (ducere ad perfectam quantitatem), and the capacity of generation must preserve the species. The sensitive soul also has multiple capacities: the capacity of sight, of hearing, of smell, etc., which have different operations. Also, the common sense has several capacities, as imagination (potentia ymaginativa) and memory (potentia memorativa). Therefore, the soul requires multiple organs in its body in order to perform those operations. Also, the intellectual soul insofar as it is intellectual does not have a bodily organ; however, its operation depends on some bodily power (virtus) that is in an organ, i.e., on the phantasia. (QDA-2012-II: 328–329)