When Martin Gardner descrubes a book as "awesome" I am impressed. Now that I have my own copy I find it difficult to find words to adequately describe this book. Of the many books on the history and theory of mathematics that I either own or have read this one stands out above the rest. Jan Gullberg has turned mathematical writing into an artform. A general text, such as this, can obviously not treat every subject in detail, and if you have a particular interest you will still need other sources, but don't let that lead you to believe the treatment here is superficial. This book, the result of ten years work, is indeed awesome. Anyone with an existing passion for mathematics will find much here that is already familiar, but presented in a refreshing, and highly readable, fashion. Anyone new to the subject could not ask for a better introduction. I have many other "favourite" mathematical authors and titles, but if I had to choose one it would definitely be this one. It is superb.