The Comment to Dante's Inferno written by his son, Jacopo Alighieri, is not much appreciated by critics, but they're possibly wrong.
First of all, it is the first-ever comment on the poem, written probably in 1322, i.e. few months after Dante's death (Jacopo, incidentally, was the one who found the last Cantos of Paradiso, which were feared to have gone missing). The first editions of the Divine Comedy often included this brief essay as a preface. Jacopo maintained that he was "partly, but truly" revealing the worldview of his father; he also wanted to write two more essays on Purgatorio and Paradiso, but several personal problems - and, last but not least, his death in 1349 - prevented him from doing it. As with other sons of great thinkers, see Hegel, he was a drifter; he was the typical child of an "absent father," literally.
It is not here the place to comment on his Comment. Just, one big idea: the Inferno, as well as the other two parts of the Comedy, do not describe a voyage in the realms of afterlife at all, they rather are a description of mankind "as is," where the consequences of one's behavior affect his/her own body and mind. As for God, Jacopo more than once writes "la natura del mondo, cioè Idio," which anticipates the well-known Deus sive Natura in Spinoza's philosophy. Jacopo calls his father "a philosopher and a poet": was Dante a Spinozan thinker, as some interpreters would affirm?
Pic above: Inferno c. 25
Blessed the Web and who invented it! Through it (BUT Sherlockholmesly, not Facebookwise) it was possible to trace a dear friend of the ol' times back at the junior high school --- yeah, nearly 30 years ago. His name is Gaetano Lanieri, and he is a painter. Here's a couple of works by him, and his Gallery.
Welcome back, Gae!
Now that the extra materials have been all published, the posting pace will slow down to 3- 4 entries per week. In theory, at least... 'cos I am to go and visit my nephew again, and we will almost surely produce more extra materials :-) So, the pace should accelerate once more, starting from next week.