This seminar is a close examination of the divine origin of law in different works of Thomas Aquinas. There is, obviously, the presentation of law in the Summa theologiae (ST 1-2.90-108); (ST 2-2.44) (ST 2-2.16), etc. Earlier than these, there is SCG 3.111-146. In ST 2-2 we have such discussions as q. 122 on the Decalogue as precepts pertaining to justice. Notice also 2-2.64 and following, on vices opposed to the justice of exchange.