Walls are meant to separate, that is true. After all, it is an essential mission of the architect to ‘define space’, which means to construct limits, edges, boundaries that carve out particular pieces of undifferentiated space for human purposes. Walls of many different shapes and materials are prime means at the architect’s disposal, and we are used to thinking of them as dividers between one side and another. Most often these two sides are different, even opposing—cold/warm, dark/light, noisy/quiet, public/private—and the separating walls secure people or things on one side from people or things on the other.

Read more at Lebbeus Woods