05:45Four ThoughtSeries 4Episode 46: Mark GrahamBBC Radio 4 Duration: 15 minutes Sun 18th May 2014, 05:45 on BBC Radio 4 LWAvailable for over a yearListen nowThought-provoking talks with a personal dimension.GenresFactualFactualArts, Culture & the MediaBrandFour ThoughtSeriesFour Thought: Series 4 Source: BBC Online