Here's a list of 10 good, popular mathematics books: https://www.theguardian.com/books/2012/jan/18/ian-stewart-top-10-popular-mathematics https://www.theguardia

Here's a list of 10 good, popular mathematics books: https://www.theguardian.com/books/2012/jan/18/ian-stewart-top-10-popular-mathematics https://www.theguardian.com/books/2012/jan/18/ian-stewart-to... Of the list, I've read Goedel, Escher, Bach", and What is Mathematics Really* and can recommend them wholeheartedly. GEB is a bit of a project, but it will bend your mind in a good, math-y way. I first read it in high school, so the material should be pretty accessible.