We are very sad to learn the news of the death of Nikolai Kopanev, head of the Voltaire library in St Petersburg. We last had the pleasure of welcoming him to Oxford in 2009, as part of the celebrations of the 250th anniversary of Candide; more recently we published his article ‘V. S. Lioublinski et le Corpus des notes marginales‘ in the reissue of volume 5 of Voltaire’s marginalia which appeared in 2012 (OCV, vol.140, p.947-50). Nikolai Kopanev played an important role in negotiating the agreement with the Voltaire Foundation to continue the publication of the Corpus des notes marginales. We send our sincere condolences to his family and colleagues at the National Library of Russia.