Crossword puzzle clue "you don't think i will"

Governor who said "I don't think there's anybody in America who would necessarily think my personality is best suited to being number two"

"All right, brain, I don't like you and you don't like me - so let's just do this and I'll get back to killing you with ___": Homer Simpson

"You don't think I'd do it, do you?"

"Surely you don't think I would do that, do you?"

[Don't you think you're milking it a bit too much?]

"You don't think, therefore you're stupid, Descartes," for one?

Cry when you don't think you'll make it

Roosevelt who said "You must do the things you think you cannot do"