Some days I realise I’ve been forgetting basic things, so I run upstairs, or downstairs, or wherever they are and I say, ‘You must know that your Mum was the funniest, most excellent person. She was my best friend. She was so sarcastic and affectionate …’ and then I run out of steam because it feels so crass and lazy, and they nod and say, ‘We know, Dad, we remember.’