SpaceX founder Elon Musk reminds us of Marvin from The Hitchhiker's Guide To The Galaxy. In addition to being a perpetually miserable robot from outer space (citation needed), he also has a brain the size of a planet. But how did he get so gosh-darned smart?
DNA and upbringing probably had a lot to do with it - but so did reading the right books at the right age. Here are five books that Musk reckons everybody should read; from weighty science-fiction to breezy business tomes. Best of all, they're all mentally accessible to the average person.