What quote did Proctor use to help Mary reamain brave in the play The Crucible by Arthur Miller?

“Now look you. Never - (He drops his hands.) Now look you. Child, there is peril in all this. I think you must - you are a good girl, Mary, a proper girl (Now gently.) Mary, the Devil is precise; the marks of his presence are definite as stone, an he leave none when he's done. You cannot blacken the name of Jacob Goodwife now, not now. We must discover if it may be Abigail who's using him- ( then firmly ) Mary, do you understand my meaning?" Act I