In this suggestive inquiry into the operations of linearity in architectural theory and practice, Catherine Ingraham investigates the line as both a conceptual and literal force in architecture. She approaches her subject from philosophical, theoretical, practical, and historical points of view, finding the following points of convergence: architecture’s relation to property, politics, and economy; architecture’s relation to propriety and the need to keep things “in line”; and architecture’s relation to the proper name, human identity, object identity, and spatial location and demarcation.