I was excited when this book was suggested for me. The problem is that it takes a great deal of concentration to read it. I barely recognized Newton's three laws of motion. It is about as readable as a PhD thesis. Anyone can afford to acquire this premier work which presents the fundamental principals of physics. I gave it three stars because the idea of having it on the Kindle format is commendable. However, the translation needs a translation. Perhaps, there is a brillant writer , like Michael Guillan or Andy Weir, who can put the concepts into a form that is much easier to comprehend.