Ann Deever has returned to her childhood neighborhood and is staying
Start: The man was a fool, but don’t make a murderer out of him. You got no sense? Look what it does to her!
End: But I know he meant no harm. He believed they'd hold up a hundred percent. That’s a mistake, but it ain’t murder. You mustn’t feel that way about him. You understand me? It ain’t right.
For full extended monologue, please refer to clips or the script edition cited here: Miller, Arthur. All My Sons. Samuel French, 1947.