From 2008 to 2010, Madrid based architects Luis M. Mansilla and Emilio Tunon held the Jean Labatut Visiting Professorship at the Princeton School of Architecture. More than a collection of student work, From Rules to Constraints is a wide ranging reflection on teaching, design practice, history and the city. Focusing on three sites at three distinct scales, this book examines the constraints of the architectural project--social, political, historical, and environmental--in order to create new rules for working. Examining both their teaching methods and Mansilla + Tunon's own design work, the book presents the design process as an ongoing conversation between the building and the environment, between freedom and limits, and between the decided and undecided.