I got this because it is referred to frequently by DL Sayers in her version of the Divine Comedy, and I assumed that, with such orthodox endorsement as hers and that of the other Inklings, I'd be in safe hands. But I was disgusted to find, within the first few pages, firstly Wordsworth's Prelude being compared - ludicrously - to Dante; and then, immediately after, the claim that the ability to 'affirm images' or whatever he wants to call it - Williams has a way of not naming just what he means even when he is in the midst of talking about it - but in other words, I suppose, learning to write poetry - 'is the Purgatory of Dante'.
Well...no. The Purgatory of Dante is not a metaphor for creative self-discipline, not a poetic image; it is the actual Purgatory. And since Williams seems to have had in mind Wordsworth's silly worship of poetry as a spiritual path, his made-up word 'inGodded' may mean many things - again he is vague - but probably does not mean literally joining our lives to that of God.
In short, Williams has not the imagination to see that the Comedy is not all imagination. He is a little man from a little age, not of sufficient stature even to see clearly what Dante did. He thinks he is on Dante's level, thinks he can see inside the machine, because he thinks he is a poet; but he was much less than a poet, really, and Dante much more than one.
Of course Dante was not claiming that the Comedy was an account of an actual journey, and it certainly has allegorical meanings, but - allowing for the embodiment of many spiritual things in physical forms - he probably believed, like many then and since, that a journey something like it is not only possible but would actually be undergone by everyone one day, when the time came. I hope, when it came for Williams, that he finally learned how paltry and trivial were his aesthetic idols.
After that start I tried to read other parts of the book, but I can't. Having fundamentally misunderstood the purpose of the Divine Comedy - or rather, chosen to cast it in his own terms - he has misunderstood everything, and whatever points he may make by the way are irrelevant.
It wasn't cheap. Frankly I feel cheated.