He said:
"It's not so much a revenge, really, as simple justice. He took my glazier's diamond, which was the thing I valued most in the world, naturally; and what I ought to do, if I could, Pratt, would be to take from him the thing he values most in the world."
I said:
"That's hidden from you."
And he said:
"No, it isn't: the thing that he values most in the world is Mrs. Dunston."
I said:
"Well, you can't take her away from him."
And he said:
"I might. Some people would remove her by death. Of course, I wouldn't do anything like that. She's all right, though how she can live with a grey and brutal beast like the Doctor, I don't know--or anybody. But, of course, I can't strike him there. I've merely decided to take something he can't do without. He'll be able to make it good in time, but not all in a minute; and in the meanwhile he'll look a fool, besides being useless to the world at large."