"Yet Aristotle's excellence of substance, so far from being associated with the grand style, is associated with something that at times comes perilously near jargon"

This quote by Irving Babbitt is describing the works of Aristotle, and how his writing design is not associated with the grand design, which is a style of composing that is identified by its eloquence and splendour. Rather, Aristotle's writing is related to something that is close to jargon, which is a type of language that is excessively technical and tough to comprehend. Babbitt is recommending that Aristotle's writing is not as eloquent as the grand style, however instead is extremely technical and challenging to understand. This quote is a tip that even the great thinkers of the past can have composing styles that are not as available as we would like.