My father played a considerable role because he had a library, and was a book lover. And we had access to the loft. All the chemistry equipment which he had accumulated as a child was still there, including large jars of chemicals. And from the age of about four, on Sunday afternoons, we did chemistry. My little pudgy hands over this little flame waving a test tube was something giddy. I still find it intensely nostalgic because at the end of these, I was allowed to put a lump of sugar into the bottom of the test tube and make a sort of toffee out of it. The smell of burning sugar is still intensely nostalgic as far as I’m concerned.