Martin HEIDEGGER (translated by Albert Hofstadter) - 'Building Dwelling Thinking', in Poetry, Language, Thought, Harper and Row, New York, 1971
(originally 'Bauen Wohnen Denken', in Vortrage und Aufsatze, 1954)
[The Hofstadter translation of this essay is also included in Neil LEACH (editor) - Rethinking Architecture, Routledge, London and New York, 1997]

page 148:

... as long as we do not bear in mind that all building is in itself a dwelling, we cannot even adequately ask, let alone properly decide, what the building of buildings might be in its nature. We do not dwell because we have built, but we build and have built because we dwell, that is, because we are dwellers.

page 152:

The bridge swings over the stream "with ease and power". It does not just connect banks that are already there. The banks emerge as banks only as the bridge crosses the stream. The bridge designedly causes them to lie across from each other. One side is set off against the other by the bridge. Nor do the banks stretch along the stream as indifferent border strips of the dry land. With the banks, the bridge brings to the stream the one and the other expanse of the landscape lying behind them. It brings stream and bank and land into each other's neighbourhood. The bridge gathers the earth as landscape around the stream.

page 154:

What the word for space, Raum, Rum, designates is said by its ancient meaning. Raum means a place cleared or freed for settlement and lodging. A space is something that has been made room for, something that is cleared and free, namely within a boundary, Greek peras. A boundary is not that at which something stops but, as the Greeks recognized, the boundary is that from which something begins its presencing. That is why the concept is that of horismos, that is, the horizon, the boundary. Space is in essence that for which room has been made, that which is let into its bounds. That for which room is made is always granted and hence is joined, that is, gathered, by virtue of a location, that is, by such a thing as the bridge. Accordingly, spaces receive their being from locations and not from "space".

page 160:

Only if we are capable of dwelling, only then can we build.