This was a very interesting read. It gives a great explanation of string theory and quantum mechanics. I really enjoyed all of it. It also has some diagrams/illustrations to help convey certain ideas sprinkled throughout the book. The illustrations are not there for no reason. They genuinely helped me understand certain concepts. I really enjoy Brian Greene's writing style. I hope to buy and read more of his books in the future.<br><br>I've always been naturally fascinated by learning physics (especially at the quantum scale), and this book is perfect for that. It definitely satisfied my hunger for knowledge. Although string theory is just a theory, it is very interesting to read about. I never studied physics in college, nor did I take any advanced physics classes in high school. My knowledge basically comes from books like this and some YouTube videos.<br><br>This book is just constant FUN.<br>10/10. I would recommend this to any person who enjoys physics and has a decent level of background knowledge. You should know beforehand what atoms are, protons, neutrons, electrons, maybe some basic knowledge of quarks, photons, etc. Know some of the elementary particles and forces and a little bit about what they are, where you can find them in the universe. The Internet is an excellent resource for learning about these.<br>Know the basic structure of atoms.<br>I dove into this book with basic knowledge on all of the points above, and I had a great time. Try looking up some videos and experiments on YouTube, especially the visualization of gravity. That was an interesting thing to see in an experiment.