It occurred to me that at one point it was like I had two diseases – one was Alzheimer's and the other was knowing I had Alzheimer's. There were times when I thought I'd have been much happier not knowing, just accepting that I'd lost brain cells and one day they'd probably grow back or whatever. It is better to know, though, and better for it to be known, because it has got people talking, which I rather think was what I had in mind.

We are not here for long – try not to take everything too seriously.

Don’t overcook pasta.

It is necessary, I believe, to accept this idea, not only for science, but also for other things; it is of great value to acknowledge ignorance.  It is a fact that when we make decisions in our life we don't necessarily know that we are making them correctly; we only think that we are doing the best we can – and that is what we should do.

Mental cruelty.

Doing an episode of Doctors was a bit of a nadir.

When I was a teenager, I laughed at a joke I didn’t understand. Whoever told the joke turned to me and said, “What are you laughing at?” Of course I didn’t know and he obviously knew I didn’t know. It was excruciating.

Fine dining when it goes wrong.

If my children remember me as fondly as I remember my mum, that would be a treat.

I’ve always been frightened of the dark. I sometimes wonder whether it stems from being away filming from the age of five. I can remember being devastatingly homesick and having a little nightlight I used to look at to reassure myself things were all right.