The renowned Serbian performer on living every day as a "god-present from the sky." "I had experienced absolute freedom — I had felt that my body was without boundaries, limitless; that pain didn't matter, that nothing mattered at all — and it intoxicated me. That was the moment I knew that I had found my medium. No painting, no object I could make, could ever give me that kind of feeling, and it was a feeling I knew I would have to seek out, again and again and again." Marina Abramovic, known for cutting her body and reducing strangers to tears, sits down for lunch with the FT's Jan Dalley.