A Brief History of Time
I found the 1988 first edition of A Brief History of Time at a used book shop while on holiday, and spent some days on the beach absorbed in it. Although the concepts in the book have been around for years now, it was interesting to read Hawking’s take on the history of science and human thought. He lost me a bit when he started to get into quantum mechanics, but one can’t expect all the complex sciences to be easily summarized by one person in one book. His infectious curiosity and sense of humour make this book easy to recommend, though you’ll probably want to find one of the newer updated editions.