Veteran director Francis Ford Coppola has said that films should be judged ten years after their release and says that even apparent failures can become timeless classics.

The Godfather director told Empire magazine, "Films I thought, because of their original reception, were failures, yet went on in time to be regarded as classics. Sometimes I think films shouldn't be judged until 10 years have passed."

On what he thinks makes a quality film he said, "The balance of depth, complexity, passionate feeling and entertainment."

He continued, "There were always two sides - the commercial and the artistic. Of course, the Holy Grail was to achieve both in the same film. I've always wanted to break new ground and yet let there be heartbreaking moments of humanity - with goals like that you pretty much always feel as if you're coming short."