Bertrand Russell first delivered this lecture on March 6, 1927 to the National Secular Society, South London Branch, at Battersea Town Hall. What Is a Christian? Bertrand Russell first delivered this lecture on March 6, 1927 to the National Secular Society, South London Branch, at Battersea Town Hall. See below for a . Bertrand Arthur William Russell 1872-1970 British philosopher, logican, mathematician, historian, and social critic. Why Im Not a Christian . Bertrand Russell first delivered this lecture on March 6, 1927 to the National Secular Society, South London Branch, at Battersea Town Hall. Full text: .