Peter Fonagy is Head of the Division of Psychology and Language Sciences at University College London. He has occupied a number of key national leadership positions including Chair of the Outcomes Measurement Reference Group at the Department of Health, and Chair of two National Institute for Health and Care Excellence Guideline Development Groups. His clinical interests center on issues of early attachment relationships, social cognition, borderline personality disorder and violence, and today he will be speaking about epistemic petrification. He was interviewed at the Epistemic Petrification Conference, held on the 2nd-3rd July 2018, at Bristol University. The event was part of the Life of Breath project, sponsored by the Wellcome Trust.