and parliamentary delegations from 68 countries, Leo revisited a topic that he has raised on a number of occasions during the first few weeks of his papacy.

"In particular, it must not be forgotten that artificial intelligence functions as a tool for the good of human beings, not to diminish them or even to replace them," Leo said at an event held as part of the Roman Catholic Jubilee or Holy Year.

AI proponents say it will speed up scientific and technological progress and help people to carry out routine tasks, granting them more time to pursue higher-value and creative work.

The U.S.-born pontiff said attention was needed to protect "healthy, fair and sound lifestyles, especially for the good of younger generations."

He noted that AI's "static memory" was in no way comparable to the "creative, dynamic" power of human memory.

"Our personal life has greater value than any algorithm, and social relationships require spaces for development that far transcend the limited patterns that any soulless machine can pre-package," he said. Leo, who became pope in May, has spoken previously of the threat posed by AI to jobs and has called on journalists to use it responsibly.