At medieval universities, boundaries often served to reinforce divisions among competing groups and methods. Yet the crossing of these boundaries could also provide the basis for fruitful exchanges. The essays in this volume, contributed by specialists from Europe and North America in the study of medieval history, philosophy, theology, medicine and law, explore various ways in which boundaries between disciplines, faculties and between town and gown were both created and crossed at this new institutional form. Originally presented at the 2008 conference held in Madison, Wisconsin, they demonstrate in particular the richness and vitality of intellectual life at European universities both before and after the mid-thirteenth century. Contributors are David Luscombe, Marcia L. Colish, Chris Schabel, Maarten J.F.M. Hoenen, Kent Emery, Jr., John E. Murdoch, Michael R. McVaugh, Danielle Jacquart, Kenneth Pennington, Karl Shoemaker, Robert E. Lerner, and Jürgen Miethke.