At the Root of Things: The Subatomic World is a journey into the world of elementary particles-the basic constituents of all matter in the universe-and the nature of the interactions among them. The book begins with a summary of pre-quantum physics and later tackles quantum physics, which is essential for the study of elementary particles.It is written in a non-technical way so that anyone interested about these issues will be able to read it. All and all, this is a book that not only helps outsiders understand the subject in a non-mathematical manner; it also inspires them to join the exciting endeavor. It contains many line diagrams to illustrate the ideas and a few mathematical equations like E = mc2.