 Crathorn’s Sentences commentary is of great philosophical and historical interest for the study of the first generation of Oxford thinkers after Ockham because he develops his own provocative positions by discussing the major issues of his day and criticizing the views of his contemporaries (Courtenay 1978, Gelber 2004). His favorite target was Ockham, but he also argued against the views of Thomas Aquinas (Krauss 1933), John Duns Scotus, Richard Fitzralph, and Robert Holkot (Schepers 1970, 1972).