It will be held on Thursday, September 5 at 7.30pm at the Berry School of Arts.

In his dissertation on architecture, Leon Battista Alberti - the original 'Renaissance man' - wrote: 'We shall therefore borrow all our rules for the fixing of proportions from the musicians'.

It is not surprising that the question of proportion should be an important theme in Alberti's book, but how did the musicians get involved?

It turns out that there is a mathematical link between visible proportions and audible proportions, or harmony, and that Renaissance architects were well aware of this link.

They saw it as proof that their architecture could participate in the harmony of the whole cosmos.

One of them, Filippo Brunelleschi, took the idea further in his invention of 'linear perspective' and thereby, incidentally, revolutionised western painting.

Colin Davies is an architect, a former editor of The Architects' Journal and a regular contributor to architectural magazines world-wide.

He was until recently Professor of Architectural Theory at London Metropolitan University. He has made numerous TV and radio appearances and written several books.

Cost of the lecture is included in membership ($140 per year) or $25 cash or card at the door, which includes a light supper with wine.

ADFAS Shoalhaven is a not for profit organisation where you can learn more about the arts in a friendly and welcoming environment.

Information on the society and the 2019 program can be found at adfas.org.au/shoalhaven/