Molecular Driving Forces is an introductory statistical thermodynamics text that describes the principles and forces that drive chemical and biological processes. It shows how the complex behaviors of molecules can result from a few simple physical processes, and a central theme is how simple models can give surprisingly accurate insights into the workings of the molecular world. Written in a clear and reader-friendly style, the book gives an excellent introduction to the subject for novices. It should be useful to those who want to develop their understanding of this important field, seeing how physical principles can be applied to the study of modern problems in the chemical, biological, and materials sciences.