This Proceedings contains lectures given at the third annual Physics Summer School held at The Australian National University. The courses were planned to provide a balanced overview of low, intermediate and high energy nuclear and particle physics for both theorists and experimentalists. The lectures start at an introductory level and build up to a stage where the reader can appreciate the challenges of current research fields.

Written by one of the world's leading theoretical physicists, this comprehensive volume offers a thorough overview of elementary particle physics and discusses progress in the field over the past two decades. The book forges links between new theoretical concepts and long-established facts in a style that both experts and students will find readable, informative, and challenging. A special section explains the use of relativistic quantum units, enabling readers to carry out back-of-the-envelope dimensional estimates. This ambitious book opens the door to a host of intriguing possibilities in the field of high-energy physics.