Juxtapositions (a lecture for a conference on Museums and Art History at Tate Modern)
Rothko and Nietzsche (1hr 12 mins and 5 secs into this long mp3 - sound only - a lecture for a Rothko Symposium at Tate Modern)
Thomas Demand: Absence and Presence (audio 18mins, from a Tate Modern conference 'Agency and Automatism) a talk about the photographer and how his work deals with what is not present as well as with what is.
On Joan Miró (25 mins video, talk at Tate Modern Miró study day)
On Plato, Hume, Aesthetics etc. from a session of a Tate Modern course, Classic Aesthetics (recorded on a USB microphone)
On Art and Evolution (discussion with Denis Dutton on BBC Radio 4's Today Programme
What Makes a Fake a Fake? (discussion on BBC Radio 4's 'The Philosopher's Arms, series 2)