Facets of Physics contains the major papers in the symposium on May 3, 1968 dedicated to Gregory Breit's honor. This book covers different facets of physics and the contributions made by Breit. The book reviews the development of the current knowledge of the nucleon-nucleon interaction, the status of understanding on the nuclear matter, and the detailed treatment of the finite nuclei. It also examines the consequences of the short-range nature of nuclear forces, the importance of the Breit interaction in atomic physics and quantum thermodynamics, and different proton-proton scattering studies. This book is a good reading material for nuclear physicists and other scientists who are interested in atomic physics and quantum thermodynamics.