Dante's ideas about sin (as seen in Dante's Inferno) were consistent with Roman ideology. For some, his categorization of sin could seem backward based upon the fact that he categorized the sins of lust, wrath, and violence as being less sinful than lying, deception and treason (based upon the fact that these were sins committed against another human being). The lesser sins (those of lust, wrath and treason) were in levels located closer to Paradise and the other sins (lust, wrath and treason) were located closer to Hell.
Based upon his ideology, Dante categorized sins in the following way:
Perverted Love: Pride, Envy, Wrath/Anger
Insufficient Love: Sloth
Excessive Love of Earthly Goods: Avarice/Greed, Gluttony, Lust
Given that through his categorization Dante placed great emphasis on love, it can be recognized that he placed an immense value on Christian charity.