I don't know much about hanso, but I did some research and found that a lot of the imagery in the show comes from a book named "Headlong Hall" written by Thomas Peacock. I think the book is about philosophers in ancient greece. The book mentions things such as the statue with only four toes on a single standing leg, like the one Sayed saw when he was on the boat. The book also describes an Island that is almost identical to the one that the show is taking place on. You can find all of this in chapter four of the book.