Son's vigil at dying father's bedside
The father spent his life staking everything on the son's schooling and escape from hardship. The son's education is what now lets him narrate that life, but it cannot save the man who paid for it.

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The father spent his life staking everything on the son's schooling and escape from hardship. The son's education is what now lets him narrate that life, but it cannot save the man who paid for it.
When the son tends his father's body at the end, bathing, feeding and carrying him, he repeats the acts the father once performed for him as a child. The reversal shows filial love as a debt that can only be repaid through the same bodily, unglamorous labour in which it was first given. It also exposes how late in life that love tends to be recognised.
A poor parent invests hope and labour in a child's education so the child can leave hardship behind. That success creates a gap in class, language and outlook between the child and the parent who made it possible. The parent's sacrifice is fulfilled precisely by producing a child who no longer shares his world.
The novel alternates a static present, the hospital vigil in which almost nothing happens but decline, with an expansive remembered past, so each bodily detail of the dying man triggers a memory of him in his strength. The contrast between the diminished body and the recalled vigorous one generates the grief. The waiting for death becomes the occasion for reconstructing an entire life.