Complex sentence: Juster wrote The Phantom TollboothAlthough Juster enjoyed writing, his architectural career remained his primary emphasis' e served as a professor of architecture and environmental design at Hampshire College from its first trimester in 1970 until his retirement in 1992.
Split into simpler sentences: Juster wrote The Phantom TollboothAlthough Juster enjoyed writing, his architectural career remained his primary emphasis. He served as a professor of architecture and environmental design at Hampshire College from its first trimester in 1970 until his retirement in 1992.