Complex sentence: Glaser, raised in a moderate Jewish family, is the youngest of three children, was born Paul Manfred Glaser in Cambridge, Massachusetts, the son of Dorothy and Samuel Glaser, who was an architect.
Split into simpler sentences: Glaser, raised in a moderate Jewish family, is the youngest of three children. He was born Paul Manfred Glaser in Cambridge, Massachusetts, the son of Dorothy and Samuel Glaser, who was an architect.