why keller killed himself? write a quote from the text.

I think Keller can't handle both his sons accusing him. He feels the accusations of one son from even beyond the grave and his other son is ready to send him to prison. In act 3 Chris talks about putting his father in jail,

" I could jail him! I could jail him, if I were human any more. But I'm like everybody else now. I'm practical now. You made me practical."