Interesting account of Stephen Hawking's life; albeit one where the chapters on that life are often alternated with chapters on the science he was working on. This is hard to avoid - one can't really do a decent bio of a person while ignoring their life's work! - but for the first half of the book I was far more interested in the biography chapters, while the pure science ones were a slightly annoying interruption. Then, about halfway through, it all swapped round for me. I actually found myself taking notes on the science chapters, fascinated and trying to understand better, then slogging my way through the life history just so I could get back to note-taking!

Never happy, that's me.