Many aspects of granite geology are covered in Understanding Granites: Integrating New and Classical Techniques, a 288-page volume edited by Antonio Castro, Carlos Ferñandez, and Jean-Louis Vigneresse. However, the topics chosen for this collection lean toward the physical, rather than the chemical end of the spectrum. In the introduction to this 16-chapter collection, the authors set the stage by reviewing the groundwork laid by Hutton, Reed, and Bowen; they then discuss the landmark work of Chappell and White, first published in the 1970s, which ushered in the new era of granite research—one that has continued unabated to the present day. Finally, the editors outline some of the perennial questions of granite science, such as the “room problem,” granite ascent and emplacement, and the thermal and petrochemical requirements for granite genesis.