"subjective" in OED

[James Kossuth]

OED 2 has this quotation at sense 3a of "subjective":

1707 Oldfield Ess. Impr. Reason ii. xix, Objective certainty,
or that of the thing, as really it is in itself..a Subjective
certainty of it in the infinite Mind.

I'm trying to find the full citation for that quotation, but
"Oldfield" does not seem to be in the bibliography.  Does
anyone know who this Oldfield was, and the full title of the
work?

Thanks,
James.