Barack Obama

The former US president is a huge fan of the written word and uses books as a form of escapism. He said: "It’s interesting, the stuff I read just to escape ends up being a mix of things — some science fiction. For a while, there was a three-volume science-fiction novel, the 'Three-Body Problem' series which was just wildly imaginative, really interesting. It wasn’t so much sort of character studies as it was just this sweeping.