This paper is the text of the Society’s Annual Lecture for 1988, delivered at the Royal Society of Arts on 14 November.
It is a commonplace on occasions such as this for speakers to begin the lecture by acknowledging the honour they feel in having been asked to deliver it. In most instances there is no means of knowing whether the sentiment is anything more than a rhetorical flourish for form’s sake; this evening however may be different, because of the chronological centre of gravity of the Society’s interests, as indicated, for example, by the fact that the great majority of articles in the Society’s journal deal with the buildings of the sixteenth, seventeenth, eighteenth, and nineteenth centuries. Thus, as a historian of the architecture of the Middle Ages, I think I can say, not rhetorically, but as an almost quantifiable statement, that it is indeed an honour to be asked to deliver the Society’s annual lecture this evening.