(adapted from notes by A. Moreno, O.P. and M. Dodds, O.P.)

• Vegetative soul.

• Sensitive soul.
  • The functions proper to animals.
  • The nature of the sensitive soul.

  Sensitive powers
  

  1. Knowledge (cognition).
     • The nature of cognition.
     • The union involved in knowledge.
     • The foundation of knowledge: immateriality.
     • The impressed and expressed species in the process of cognition.

     Specific cognitive powers
     

     1. External sense cognition.
        • Objects of the external senses.
        • Veracity of the external senses.
        • Sensation and the composite.
        • Perception and sensation.
     2. Internal senses.
        1. The central sense (common sense)
           • Nature of the common sense.
           • Functions of the common sense.
        2. The imagination or phantasy.
           • Nature of the imagination.
           • Functions of the imagination.
        3. The estimative sense.
           • Nature of the estimative sense.
           • Functions of the cogitative power.
        4. The memorative sense.
           • Nature of the memorative sense.
           • Functions of the memorative sense.
  2. Appetite.
     • Natural and elicited appetite.
     • The existence of appetite.
     • Knowledge and appetite compared.
     • Formal ratio of the appetite.

     Specific sense appetitive powers
     

• Rational soul
  1. Knowledge (Intellect)
  2. Appetite (Will)