imho, the language didn't age as well as other popular multi-paradigm predecessors. I never got my head around their OO implementation, or handling of arguments.
If you want to delve into his work, please note that his editor John Martin/Black Sparrow heavily defaced most of his original work with mediocre edits that bordered vandalism [0]. The manuscripts is where the better stuff is.
Spiders are also useful. My exgf lived in a farm and had dozens of harmless spiders in the ceiling of her bedroom that ate all mosquitoes. It nuanced my view on spiders.
