An essential element of any art is risk. If you don't take a risk then how are you going to make something really beautiful, that hasn't been seen before?
Cinema without risk is like having no sex and expecting to have a baby.
To make great movies, there is an element of risk. You have to say, 'Well, I am going to make this film, and it is not really a sure thing.'
When that happens - when risk is taken and the filmmakers dive into the subject matter without a parachute - very often what you get it something with those qualities that make it age well with the public.