Complex sentence: R.S.S. (1671--1743) was a pioneering physician, early proto-psychologist, philosopher and mathematician, born in Aberdeenshire, Scotland, who opened a medical practice in Bath in 1702.
Split into simpler sentences: R.S.S. (1671--1743) was a pioneering physician, early proto-psychologist, philosopher and mathematician. Born in Aberdeenshire, Scotland, he opened a medical practice in Bath in 1702.