How do ordinary objects persist through time and across possible worlds? How do they manage to have their temporal and modal properties? These are the questions adressed in this book which is? "guided tour of theories of persistence." The book is divided in two parts. In the first, the two traditional accounts of persistence through time (endurantism and perdurantism) are combined with presentism and eternalism to yield four different views, and their variants. The resulting views are then examined in turn, in order to see which combinations are appealing and which are not. It is argued...