Can you guess?

Still in my writer's cave finishing my sixth book (really need to refresh my wallpaper and background - have gone quite gray). Here's a small sample. Can anyone figure out who the "guide" is and where this odd scene is set?

Volar looked around.
It was more blasted and barren landscapes–with a ruined slope to one side–as far down as he could see.
“The ones that peopled this place, and the levels just below, let their appetites destroy their reason. The heavenly gifts of love, sustenance and protection, they allowed to grow into chains. Theirs began as a mutual attraction, then became a solitary indulgence. So, needless to say, but for the grace of the divine, all of us might have ended here. Still, their penance was the lightest. The raging winds that once buffeted them from side to side have grown still.”
As he led Volar to the next, lower level, the poet mused, “Towards the end, there was a strange group here who walked about naked with flowers in their hair, singing songs. They were really quite pleasant.”
For the next three levels, down the sloping well, the poet made similar observations; these circles were similarly empty of essences:
Here in the freezing mire, they laid their large frames, the ones who consumed until they were consumed.
Here, those who hoarded fought those who squandered, endlessly with mad howls, and those who dulled their senses with the pipe, the mug or the poppy preferring death to life. Many of our naked flower-wearers, sadly, ended up here as well.
Further down, they came to another dry riverbed.
Here, in this swampland and fetid fen, where impotent anger clashed and snarled only to sink sullen beneath the black waters in savage self-frustration, how easy it proved that so many of us would destroy ourselves in this way.
“These I have shown you,” his guide went on to explain, “were the most peopled places once, not just for our flawed natures. The liars and sewers of discord, who were housed below in agony, did their best to convince the rest of us, that the corruption of good was a good in itself.”