I'm pretty catholic about what constitutes science fiction.

My old English buddy, John Rackham, wrote and told me what made science fiction different from all other kinds of literature - science fiction is written according to the science fiction method.

The big new development in my life is, when I turned 80, I decided I no longer have to do four pages a day. For me, it's like retiring.

My first thought was always a cigarette. It still is, but I haven't cheated.

For someone to be taken seriously it was valuable to have the appearance of someone who deserved to be taken seriously.

People as me how I do research for my science fiction. The answer is, I never do any research.

I was thinking of writing a little foreword saying that history is, after all, based on people's recollections, which change with time.