When I see nature, when I look into the sky, the dawn, the sun, the colors of insects, snow crystals, the night stars, I don't feel a need for God. Perhaps when I can no longer look and wonder, when I believe in nothing - then, perhaps, I might need something else. But I don't know what.

Another reason for switching to color is world television. In a few years, it will all be in color, and you can't compete against that with black-and-white films.

Reality itself is steadily becoming more colored. Think of what factories were like, especially in Italy at the beginning of the 19th century, when industrialization was just beginning: gray, brown and smoky. Color didn't exist. Today, instead, most everything is colored. The pipe running from the basement to the 12th floor is green because it carries steam. The one carrying electricity is red, and that with water is purple. Also, plastic colors have filled our homes, even revolutionized our taste. Pop art grew out of that and was possible because of this change in taste.

Take Einstein; wasn't he looking for something stable and changeless in this enormous, constantly changing melting pot that is the universe? He sought fixed rules. Today, instead, it would be helpful to find all those rules that show how and why the universe is not fixed - how this dynamism develops and acts. Then maybe we will be able to explain many things, perhaps even art, because the old instruments of judgment, the old aesthetics, are no longer of any use to us - so much so that we no longer know what's beautiful and what isn't.

When I am shooting a film I never think of how I want to shoot something; I simply shoot it.

I may film scenes I had no intention of filming; things suggest themselves on location, and we improvise. I try not to think about it too much. Then, in the cutting room, I take the film and start to put it together, and only then do I begin to get an idea of what it is about.

My films have always had an element of immediate autobiography, in that I shoot any particular scene according to the mood I'm in that day, according to the little daily experiences I've had and am having - but I don't tell what has happened to me. I would like to do something more strictly autobiographical, but perhaps I never will, because it isn't interesting enough.