The Great Solitary(1977)

Nicolae (George Motoi), the intelectual descendant of Moromete family, former communist apparatchik in the 50s, becomes a horticultor due to a political error, and refuses to have any social life, even if he is unhappy with his inactivity. The death of his partner makes him respond to the overtures of his old comrades. Based on the eponymous novel by Marin Preda.