Having listened to or read much shorter books on this subject I wasn’t sure about starting this book because of its length. My bachelors degree from 30 years ago was in the social sciences. At this point in my life I’m simply enjoying learning for the sake of learning. My main focus being physics. A subject that I was overwhelmed by in my youth. For someone at my level this is the perfect book for this subject matter. I was able to understand more about the 1st law and appreciate much more about the complexity of the 2nd. Enjoyed the history and detail of those that made contributions to the development of thermodynamics. I knew from the beginning that the audiobook didn’t include any of the math and I wasn’t interested anyway. However after listening to this book I will be purchasing the hard copy for the math. Truly a delight.