Liston never complained about prison, saying he was guaranteed three meals every day. The athletic director at Missouri State Penitentiary, Rev. Alois Stevens, suggested to Liston that he try boxing, and his obvious aptitude, along with an endorsement from Stevens, who was also a priest, aided Liston in getting an early parole. Stevens organized a sparring session with a professional heavyweight named Thurman Wilson to showcase Liston's potential. After two rounds, Wilson had taken enough. "Better get me out of this ring," exclaimed Wilson, "he is going to kill me!"