What are some powerful and moving quotes about the death of a son?

One powerful quote about the death of a son is from Shakespeare's play "King John": "Grief fills the room up of my absent child, lies in his bed, walks up and down with me, puts on his pretty looks, repeats his Words, remembers me of all his gracious parts, stuffs out his vacant garments with his form." This quote captures the deep sense of loss and grief a parent feels after the death of their child.