Simplify the following text for a Grade 9 native English-speaking person.
Original: Inspired by an interview with Stephen Wolfram , Rucker became a computer science professor at San JosÃ State University in 1986 , from which he retired in 2004 .
Simplified: Inspired by an interview with Stephen Wolfram , Rucker became a computer science professor at San JosÃ State University in 1986 . He retired from SJSU in 2004 .