Theme of love and family in A Tale of Two Cities?

A Tale of Two Cities focuses a lot of attention on the preservation of family groups. The first manifestation of this theme occurs in Lucie's trip to meet her father in Paris. Although she worries that he will seem like a ghost rather than her father, the possibility of a reunion is enough to make her undertake the long trip. After Lucie marries Charles Darnay, the novel tends to be concerned with their struggle to keep their family together. When Darnay laments his own death sentence, it is for the sake of his family, not for his own sake. The final triumph is the sacrifice of Carton, a man who is unattached to any sort of family, who thus preserves the group consisting of the Doctor, Lucie, her husband, and her children.