Complex sentence: He received a B.A. degree from Harvard in 1950 and a Ph.D. from Harvard in (1955) and served in various positions at Harvard from 1955 until 1967 when he moved to the University of California at Berkeley as the Ford Professor of Sociology.
Split into simpler sentences: He received a B.A. degree from Harvard University in 1950, and a Ph.D. from Harvard in (1955). He served in various positions at Harvard from 1955 until 1967 when he moved to the University of California at Berkeley as the Ford Professor of Sociology.