Stéphane Arguillère is professor of Tibetan language and civilisation at Inalco (Institut national des langues et civilisations orientales) and a member of IFRAE. His research focuses on Tibetan scholasticism (Buddhist and Bön), Dzogchen and the history of the Nyingma school of Tibetan Buddhism. He is the author of a monograph on Longchenpa (Profusion de la Vaste Sphère, Peeters, 2007) and the translator of Tülku Tsullo's Manuel de la Transparution immédiate (le Cerf, 2016), for which he is currently preparing an English translation. S. Arguillère is the scientific coordinator of the ANR project ‘For a Critical History of the Northern Treasures’.