Trying to understand, as a non-physicist, the theories of twentieth century physics is a challenging task, even after high school have provided an introduction to the terms and concepts. This book is not only readable but enjoyable. Right from the first word till the end, the author explains the story of the beginning of quantum mechanics to the recent developments. It is written in a simple and layman language. The book beautifully describes the tale of the conflicts between the two great minds of those days; Einstein and Niels Bohr. Encapsulated into this book is the almost complete story of the development of quantum mechanics. I recommend this book to all science lovers. Superb book!!!!!