Diarmuid O’Murchu, MSC, is a member of the Sacred Heart Missionary Order, and a graduate of Trinity College, Dublin, Ireland. He is a social psychologist most of whose working life has been in social ministry, predominantly in London, UK. In that capacity he has worked as a couple’s counsellor, in bereavement work, AIDS-HIV counselling, and, in more recent times, with homeless people and refugees. As a workshop leader and group facilitator he has worked in Europe, USA, Canada, Australia, The Philippines, Thailand, India, Peru and in several African countries, facilitating programs on Adult Faith Development. His best-known books include Quantum Theology (1996 – revised in 2004), Ancestral Grace (2008), Jesus in the Power of Poetry (2009), Christianity’s Dangerous Memory (2011), In the Beginning was the Spirit (2012), God in the Midst of Change (2013), On Being a Postcolonial Christian (2014) and Divine Radiance in Human Evolution (2025). He now lives in Dublin, Ireland.