Very busy... thanks for thoughts on yesterday's quote. Here's another quote I found striking from the same sermon, "Means of Grace."
"What is seeking salvation by works? In the writings of St. Paul, it means, either seeking to be saved by observing the ritual works of the Mosaic law; or expecting salvation for the sake of our own works, by the merit of our own righteousness" (Vol. 5, p. 196, italics mine).
I'm not sure exactly what Wesley was thinking here, but this is exactly the way I interpret the phrase "works of Law" in Romans and Galatians--primarily a reference to the Jew-specific parts of the Law but also secondarily a reference to the question of whether any human could deserve God's favor purely on the basis of their right actions.