I haven't bought/read this book, but I've read all the Amazon preview. The statements made in the product description are significantly inaccurate, imo. It's not written in Feynman's unique chatty style. It's written in the style of a thesis in theoretical physics, which is what it is. It will be completely incomprehensible to anyone who is not well-versed in theoretical physics. It is well beyond the graduate level, which is where I was thirty-five years ago. It would take me years of study now to understand this book. Don't buy the book without making full use of the Look Inside feature.