 But it should not be forgotten that there were also other threads to Simplicius’ approach of harmonising the Hellenic tradition and especially of integrating Aristotle. At In Cael. 297.1–6, he mentions some interpreters (tines) who betrayed a hostile attitude towards Aristotle. It is likely that he mainly had Syrianus and Proclus in mind. Simplicius had to deal with such criticism with much more delicacy than the criticism coming from Philoponus. There is a telling passage in In Cael. 640.20–31, where Simplicius explains that Proclus has refuted Aristotle’s criticism of Plato in the De caelo in a special monograph (now lost; see Steel 2005 and Luna, Segonds, and Endress 2012: 1591–1596) in order to immediately remark that the criticism was only apparent.