I want to put it back together now, this artistic expression that contains religious feeling. I want to investigate: What was the origin? What's happened in the human mind? Can we trace back the moment of the creation of human consciousness? And why did only humans gain consciousness, not other animals? So, evolution? I don't know whether or not I can believe evolution. Maybe we wait for another 100,000 years and then apes get consciousness.

To me photography functions as a fossilization of time.

I came to California in 1970 and so many people were asking if I was a Buddhist or knew Zen theory, asking if I was enlightened already or not. So I said, "Yes, I am enlightened," and then I studied quickly to catch up.

I feel that I'm in a very interesting position, where I'm standing back to look at this change, at this moment in history of human beings. If the end of the civilization comes before the end of my life, that's lucky! I want to witness how this big story of humans ends.

I have no policy for my collection. For example, there's a bunch of meteorite [on the windowsill in my studio]. I touch it and I feel the energy from the universe. I have a 1/1,000th of a fragment of stone-age tools and pottery and debris. I can learn many things from my collection. Actually, the 1,000 Buddha, I wanted to buy it, but it's a National Treasure, so I couldn't. If you cannot buy it, just photograph it!

Humans have changed the landscape so much, but images of the sea could be shared with primordial people. I just project my imagination on to the viewer, even the first human being. I think first and then imagine some scenes. Then I go out and look for them. Or I re-create these images with my camera. I love photography because photography is the most believable medium. Painting can lie, but photography never lies: that is what people used to believe.

I didn't want to be criticized for taking low-quality photographs, so I tried to reach the best, highest quality of photography and then to combine this with a conceptual art practice. But thinking back, that was the wrong decision [laughs]. Developing a low-quality aesthetic is a sign of serious fine art-I still see this.