Thomas Arentzen is a Norwegian author, currently living and working in Sweden. He specializes in late ancient poetry and prose. As a researcher, Arentzen devotes most of his time to ecology and more-than-human species in Christian tradition, publishing both scholarly and popular works. He teaches Orthodox theology at Sankt Ignatios College (Stockholm School of Eastern Christian Studies). As Docent with a PhD from Lund University, he has also been guest researcher at Brown University, appointed Fellow at Dumbarton Oaks, and conducted a research project at Uppsala University.