We must now consider satisfaction; about which four things have to be considered: (1) Its nature; (2) Its possibility; (3) Its quality; (4) The means whereby man offers satisfaction to God.

Under the first head there are three points of inquiry:

A1 Whether satisfaction is a virtue or an act of virtue?

A2 Whether it is an act of justice?

A3 Whether the definition of satisfaction contained in the text is suitable?