Greatly written explanation of the loop quantum gravity and the journey of unification of physical forces (which in the book starts in the ancient time of Democritus), of which the most focus is understandably given to the unification of general theory of relativity and quantum mechanics. Although a lot has been written about both of these forces, their history and the people who coined them, the book uncovers interesting new stories and facts (for example the story behind the discovery of Heisenberg's principle of uncertainty). Lastly, the book is written for any reader no matter how (in)experienced he is in the field of physics.