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."

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.

My work has no theme. I don't care if my photographs get published, and I have no interest in the news. But the invasion of Prague was not news, it was my life.

The biggest lesson in photography is that from negative we make a positive

Sometimes I photograph without looking through the viewfinder. I have mastered that well enough, it is almost as if I were looking through it.

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."

The maximum, that is what has always interested me.