In school, Cosby was bright but unmotivated. He liked to tell stories and jokes to his classmates more than he liked to do his schoolwork. One of his teachers encouraged him to put his performing talents to use in school plays, not in her classroom. At home, Cosby listened to a variety of radio programs and started imitating such comedians as Jerry Lewis. He also watched such television performers as Sid Caesar and Jack Benny whenever he could.