Celli wrote novels, plays, essays, and poetry. In 1975 he won the
Pirandello Prize for his play
Le tentazioni del professor Faust. His works were performed at
Festival dei Due Mondi in
Spoleto. As an actor, Celli appeared in films such as
Pupi Avati's
La mazurka del barone, della santa e del fico fiorone. On television, he hosted the documentary programme
Nel regno degli animali. ==Politics==