But to return to the question one final time: where do l find the reality on which l must concentrate my powers of imagination when attempting to design a building for a particular place and purpose? One key to the answer lies, l believe, in the words “place” and “purpose” themselves. ln an essay entitled “Building Dwelling Thinking,” Martin Heidegger wrote:“Living among things is the basic principle of human existence,”which l understand to mean that we are never in an abstract world but always in a world of things, even when we think. And, once again