Maurice Finocchiaro (Philosophy) just has published a book, The Routledge Guidebook to Galileo's Dialogue (Routledge--Taylor & Francis Group, 2013). It is a volume in a series called "Routledge Guides to the Great Books." The great book in question is Galileo Galilei's Dialogue on the Two Chief World Systems, Ptolemaic and Copernican, whose publication in 1632 marked a crucial moment in the "scientific revolution" and helped Galileo become the "father of modern science." The Dialogue contains Galileo's mature synthesis of astronomy, physics, and methodology as well as a critical confirmation of Copernicus's hypothesis of the earth's motion. However, the book also led Galileo to be tried and condemned as a heretic by the Inquisition, in what became known as "the greatest scandal in Christendom." Finocchiaro's book is an essential introduction for all students of science, philosophy, history, and religion wanting a useful guide to Galileo's great classic.