I am not a trained mathematician, but do have advanced STEM degrees. This means that some of the book was over my head, but I couldn’t have cared in the slightest because it’s so well written, and the summary sections put the details in a much broader context. It instead inspired me to dig deeper into the subfields I’m unfamiliar with.<br><br>What I appreciate most about the book was how Stillwell relates the motivating problem of infinity in mathematics (and physics) to the many different branches of the field, and what these fields considered to be acceptable proof for a given mathematical idea.<br><br>If you have a love of maths, and are curious about the inner workings of the field, this is a great book for you.