When I first started to take photographs in Czechoslovakia, I met this old gentleman, this old photographer, who told me a few practical things. One of the things he said was, "Josef, a photographer works on the subject, but the subject works on the photographer."

I photograph only something that has to do with me, and I never did anything that I did not want to do. I do not do editorial and I never do advertising. No, my freedom is something I do not give away easily.

My photographs are proof of what happened. When I go to Russia, sometimes I meet ex-soldiers... They say, 'We came to liberate you....' I say: 'Listen, I think it was quite different. I saw people being killed.' They say: 'No. We never... no shooting. No. No.' So I can show them my Prague 1968 photographs and say, 'Listen, these are my pictures. I was there.' And they have to believe me.

The maximum, that is what has always interested me.

I have to shoot three cassettes of film a day, even when not 'photographing', in order to keep the eye in practice.

I never stay in one country more than three months. Why? Because I was interested in seeing, and if I stay longer I become blind.

When I first started to take photographs in Czechoslovakia, I met this old gentleman, this old photographer, who told me a few practical things. One of the things he said was, "Josef, a photographer works on the subject, but the subject works on the photographer."