/summa/SS/SSV/SS_Q183:
We must next consider man's various states and duties. We shall consider (1) man's duties and states in general; (2) the state of the perfect in particular.
Under the first head there are four points of inquiry:
(1) What constitutes a state among men?
(2) Whether among men there should be various states and duties?
(3) Of the diversity of duties;
(4) Of the diversity of states.