  Commentators interpreting Locke as seeing Newton’s contribution in terms of sensitive knowledge alone include Yolton (1969); Woolhouse (1994); and Downing (1997, see especially pp. 292–93).  Kenneth Winkler (2008), however, reads Locke’s correspondence with Stillingfleet and other writings from the 1690’s as a defense of Newton’s mathematical physics, and one that draws from his mathematical demonstrations a greater optimism about the possibility of certain knowledge in natural philosophy. This move has been contested by Domski (2012), who argues that Locke advocated Newton’s mathematical methods only in connection with astronomy, whose objects are unavailable for experimentation; and that Locke maintained his emphasis upon natural historical methods for questions about terrestrial bodies.