I was very much the laymen, trying to find stuff out because I'm curious about the world.

In my lifetime, the population of the world has doubled.

The thing I loved, particularly, was the mystery of science and the idea that science doesn't know all the answers, but it is a process of finding out. It's not like science will give you the right answer and science knows everything. I love the mysteries of it.

At the heart of science is experimentation. Science doesn't care what you think. What's important is experimenting and actually working stuff out.

Everything that we know now will be changed in 10 years time.

I've never felt scared of flight, ever. It's really weird. I don't know. They stick a gin and tonic in your hands and I just think, "Life is good!"

I wasn't naturally a scientist, but I was always fascinated by how the world worked and why things were the way they were.