PKD and Godel Escher Bach

In one of the Selected Letters from the 80s Phil gushes about reading GEB, which he loved and felt explained his literary method of philosophical puzzle stories. He mentions his letters to Ursula Le Guin, who he says never understood what he was trying to explain. But now that Godel Escher Bach exists his words should be intelligible. This is not an exact paraphrase and I'll post an excerpt later. Meanwhile here's a bunch of relevant/fun images I found searching Google Image