I admit that I never seriously studied Einstein's equations or quantum physics, but this book gave me a great outline of the development of modern physics. I am now motivated to listen to other audiobooks on modern physics or even get some paper books that contain equations. Michio Kaku is also good at depicting human side of Einstein and other physicists. It's fun to think about Einstein writing numerous love letters. I also never imagined that Schrödinger was a serious womanizer!