It included a prefix that sought to demonstrate the authenticity of its sources by noting that all were approved by Pope Gelasius' decree.  
This work's prologue analyzes Boethius' claim, in the Topics, that accident and substance were the two "primary kinds of things," to make a general point about the prevalence of "opinion."  It included a prefix that sought to demonstrate the authenticity of its sources by noting that all were approved by Pope Gelasius' decree.  It criticized poetical, figurative language as "obscure and vague," though it made special exception for the Scriptures by noting that if anything in them strikes a reader as absurd that it must be the fault of the scribe. This work centers on a series of 158 propositions and offers citations from other works by Church fathers and theologians that either support or contradict a certain position in order to suggest that, even, ecclesiastical, truth is up for debate.  For 10 points, identify this religious treatise, with a Latin title that translates as Yes and No, a work by Peter Abelard.
This work's prologue analyzes Boethius' claim, in the Topics, that accident and substance were the two "primary kinds of things," to make a general point about the prevalence of "opinion."  
Sic et Non