Cleese, 66, said he has reached his peak as a comedy writer and is ready to pass his wisdom on to the next generation, Zap2it.com reported.
"I'm too tired to write new comedy," he said. "I can never do better than 'Fawlty Towers' whatever I do. Now I very much want to teach young talent some rules of the game.
"Sometimes you have to go back to the basic principles which underpin great visual comedy," he continued. "The thrill I got discovering Buster Keaton when I was growing up was so exciting. He was one of the greats."
Cleese received an Oscar nomination for writing "A Fish Called Wanda" and his voice will soon be heard in the feature films "Charlotte's Web" and "Shrek 3."