How does Father Goriot develop the theme of Paternal Love and Sacrifice?

Father Goriot by Honoré de Balzac develops Paternal Love and Sacrifice across the chapters the companion marks for this theme.

Father Goriot's obsessive, self-destructive love for his daughters, who exploit him financially and emotionally, illustrates the tragic consequences of unconditional parental devotion in a materialistic society.

Goriot melts down his cherished silver to pay his daughter's debts, demonstrating extreme paternal devotion.