No the Schofield text rarely makes claims of the first sort That is one of its major problems actually It doesnt effectively place Priestley in his historical milieu I had to rely on other sources such as Tapper to do that Most of the generalized statements about Priestleys importance do not come from Schofield I would not rely on the JP A Comet in the System book It is not the most reliable text we have see publication information and citing a dissertation is sad to say not the first line of defense I already listed that Schofield quote above which shows Priestleys indebtedness to other eighteenthcentury thinkers That list is more reliable in my opinion   I agree that Schofield is partial to Priestley It was kind of frustrating actually because it was the most complete account of Priestley there was