Another amazing book of his that I don't see mentioned a lot (perhaps because it is more technical that maybe any of his other books) is 'Fluid Concepts And Cre

Another amazing book of his that I don't see mentioned a lot (perhaps because it is more technical that maybe any of his other books) is 'Fluid Concepts And Creative Analogies'. I'm reading that one now. I recommend it, along with Perception as Analogy by Melanie Mitchell, and the aforementioned Godel, Escher, Bach to anyone interested in AI / cognitive science. I've only read a small part of Metamagical Themas to date, but I've read enough to recommend that as well. Just the stuff on self-referential sentences makes it worth reading.