When we see the shadow on our images, are we seeing the time 11 minutes ago on Mars? Or are we seeing the time on Mars as observed from Earth now? It's like time travel problems in science fiction. When is now; when was then?
A key issue in developmental biology at that time was the problem of how cells underwent differentiation, with most workers concentrating on explanations in terms of changes in enzyme and gene regulation.
I had a great time investigating the pigments of different mutant fruit flies by following experimental protocols published in Scientific American, and I also remember making my own beetle collection when it was still acceptable to make such collections.
I met my wife Anne who was a sociology student, and her influence together with activities associated with the student movement of the time opened up my interests amongst other things into the theatre, art, music, politics and philosophy.
I was never very good at exams, having a poor memory and finding the examination process rather artificial, and there never seemed to be enough time to follow up things that really interested me.
This time at Birmingham turned me into a general biologist, and ever since then I have always tried to take a biological approach to any research project that I have undertaken.
It was during my time at secondary school that I abandoned religion.
I've just taken the decision that I'm going to now go full time back into the theater.
Peter Hall was just organizing the Royal Shakespeare Company. It was going to be an ensemble, it was going to be in repertory, it was going to have a home in London as well as in the Midlands, and all of those things were happening at that time.
I think no matter what you do you go through stages when you play. There was a number of times when I didn't do very well or was tired. It was too much to combine school and tennis altogether. Parents need to step in and say, take a little time off, do something fun.
I think it was the right time for me to retire because nowadays tennis is too incredibly fast and you can say that my style tennis went out of fashion.
I kind of discovered my voice for the first time, and the more I did it, the better it got.
I don't know about the time those songs were written. But he was jamming with someone in Colorado or San Francisco, and I'm sure he was working on the lyrics right up to the show because they were really relevant for the situation.
I can't remember the last time I looked at a Nirvana web site.
I wrote that letter, and the one to Nixon. And I wrote more letters, and I thought it might be a magazine article. At that time I sent it to Esquire and Playboy, but anyway, I kept writing, and all of sudden I had enough and thought, well maybe it is a book.