Nicholas of Autrecourt contains a critical edition and a complete English translation of the correspondence conducted by the 14th-century sceptic author, Nicholas of Autrecourt, with Bernard of Arezzo and a Master Giles. The introduction analyzes the extant manuscripts and discusses the different positions of Nicholas, Bernard and Giles: the purport of Giles’s reply to Nicholas, contrary to common opinion, is identified as a defence of Aristotelianism rather than of Bernard’s sceptic views. Two appendices contain a critical edition of the records of the Avignon trial against Nicholas found in the Vatican Archives, and the Condemned Articles with an English translation. Extensive indexes facilitate the use of the book as a source for the history of 14th-century thought.