'One day, I was summoned to a pub near the Royal Court theatre where Samuel Beckett was looking at my work. "These are wonderful pictures," he said' I knew Samuel Beckett's reputation. He didn't like photographers. He didn't want them around really. It's hard to believe I took so many photographs of him. During the 1970s, I photographed him and his rehearsals at the Royal Court theatre in London, and eventually did a…