sentences:  He said the decision not to rehire him infringed his First Amendment right to freedom of speech.He also alleged that the university's failure to provide a hearing violated his Fourteenth Amendment right to procedural due process of law.In an opinion delivered by Justice Stewart, the Supreme Court held that the Fourteenth Amendment does not require an opportunity for a hearing prior to the nonrenewal of a nontenured state teacher's contract, unless he can show that the nonrenewal deprived him of an interest in "liberty" or that he had a "property" interest in continued employment, despite the lack of tenure or a formal contract.