Observer: This much I know (Sir David Attenborough):
My next project is about Charles Darwin. He says in a letter to Emma, his wife, something like: 'I sat down on a bench and saw a bird singing in the trees and saw a wide mass of life going on around me, and I thought I didn't care what the process was that brought this into place because it's so wonderful.' If I lost that feeling, I'd go and do something else.
In case you missed it, let me repeat the salient sentence… Sir David Attenborough says:
My next project is about Charles Darwin.