greenbaggins
Puritan Board Doctor
Stephen Charnock defines the fool:
So a fool is one that hath lost his wisdom and right notion of God and divine things, which were communicated to man by creation; one dead in sin, yet one not so much void of rational faculties, as of grace in those faculties; not one that wants reason, but abuses his reason (Collected works, volume 1, p. 126).