This book further reinforces all of the concepts and ideas I've learned over the years regarding physics and mathematics. I would not recommend this to someone who does not have a good fundamental basis in mathematics up to integral calculus. One of my favorite examples from the book is a simple one; a basic visual proof of the Pythagorean Theorem that appears in Chapter 1 I believe. I have only taken physics up to waves and optics so a lot of the concepts were new to me. I would recommend this to anyone who is curious about the universe and has the requisite mathematical knowledge to follow along.