“I think (and Digory thinks too) that her mind was of a sort which cannot remember that quiet place at all, and however often you took her there and however long you left her there, she would still know nothing about it. Now that she was left alone with the children, she took no notice of either of them. And that was like her too. In Charn she had taken no notice of Polly (till the very end) because Digory was the one she wanted to make use of. Now that she had Uncle Andrew, she took no notice of Digory. I expect most witches are like that. They are not interested in things or people unless they can use them; they are terribly practical.”