The first is my opening speech at a public meeting in Sydney, organised by the Centre for Independent Studies. The topic was 'The Grit in the Oyster: In praise of contrary opinion'. I talked about the tactics used to silence those who put forward unfashionable evidence in public health from John Snow to the present day.
The second is my opening speech at this year's Battle of Ideas. The subject was 'Kindergarten culture: why does the government treat us like children?'