Abstract

The preponderance of the evidence indicates that Richard Rufus wrote the commentary on Aristotle’s Physics I published in 2003 as well as two commentaries on the Metaphysics. Rufus’ Aristotle commentaries date from the 1230’s as is clear from his own and Roger Bacon’s references. Twice in an undisputed Metaphysics commentary Rufus cites the distinctive and unchanging views about instantaneous change he stated «in Physicis» or «super librum Physicorum». Of course, some of his other opinions changed. In the course of claiming that these changes do not militate against the attribution, this article addresses the general question: What are the appropriate standards for an attribution?