Answer:
That medieval values were religiously motivated.
At first sight I didn´t, but to a certain degree I agree.
Explanation:
Dante's Inferno is the first part of three: Inferno, Purgatory and Paradiso.
The inferno describes the voyage of Dante with his guide Virgil through the different levels of hell. As the two other parts and Inferno clearly indicate, the (moral) values of Dante's work - that reflects the medieval time in which he lived - concentrate on the cornerstone of religion: your acts on earth will have its consequences in heaven or, more likely, in hell. The religious dogma´s of the Middle Ages are clearly represented in the absolute faith that, if you´re unfaithfull, morally unjust or, even worse, worship the wrong religion, you´re bound to suffer in after-life.
Dante's hierarchy of hell goes from lust via other sins to violence and ends surprisingly with betrayal. For example we find Judas and Brutus at the highest, or last level of hell. Fraud also scores very high on the sin-scale of Dante´s inferno. I was tempted to disagree with Dante but later I realised that betrayal can leave even deeper wounds than violence does.
