Complex sentence: Phineas Parkhurst Quimby (February 16,1802--January 16,1866), was a New England a philosopher, magnetizer, mesmerist, healer, and scientist, who resided in Belfast, Maine, and had an office in Portland, Maine.
Split into simpler sentences: Phineas Parkhurst Quimby (February 16,1802--January 16,1866). He was also a philosopher, magnetizer, mesmerist, and scientist who resided in Belfast, Maine, and had an office in Portland, Maine.