In this lecture, we (a) review the structure of Purgatory proper: (1) exemplary art, (2) penitent sinners, (3) vicious art; (b) we observed examples of love/charity as expiating virtue to envy and considered the nature of envy through (1) historical personages and (2) examples of envy in art (from the Old Testament (Cain and Abel) and Greco-Roman tradition (Aglauros and Herse); (c) we conclude by ascending to the acrid smoke and darkness of Cornice 3: Wrath, and there we meet Marco Lombardo and determine the relationship between free-will and astrology.