' A man who is settled in his opinions,' said Dr Johnson, ' does not love to have the tranquillity of his convictions disturbed.'
Undeterred Malcolm Muggeridge puts some of the many questions submitted by the viewers to this week's guests
Chris Bonington , CBE
Dr Sydney Brenner , FRS
Professor Graeme Moodie Dr Jane Somerville
Director MICHAEL HOGAN Producer OLIVER HUNKIN