Interestingly, "those who kept their rage inside at all time, instead of expressing it" would come very close to Freud's general sense of repression, inhibition

Interestingly, "those who kept their rage inside at all time, instead of expressing it" would come very close to Freud's general sense of repression, inhibition, and Melancholia. Thus depression. And it wouldn't chime badly with Blake's sense of angelic morality either. The symmetric contrast of outward and inward rage is theological in character, rather than poetic, which would more likely consider individual spirit before imposing moral abstractions like ideal rage. Current academic consensus on Dante is heavily influenced by Theology, notably Aquinas, it overlooks the heretical aspects of Dante's poetry. As for Scholars who view the interpretation as depression, Ernst Curtius is one.