Nutritive Soul (Vegetative Soul):: Found in plants :: Nutrition / Growth / Reproduction :: most basic type of soul

Found in animals. :: Includes all the capabilities of the nutritive soul, plus: Sensation (sight, hearing, etc.) / Appetite and desire / Locomotion (movement)

Rational Soul :: Unique to humans, able to universals and is capable of theoretical knowledge. Includes both the nutritive and sensitive capacities, and Reason (logos) / Abstract thinking / Deliberation and choice

+ intellect (NOUS) composed of passive intellect (NOUS PATHETIKOS) and active intellect (NOUS POIETIKOS)