The March sisters endure because Alcott gives each a recognizable appetite: Meg wants security, Jo authorship and freedom, Beth peace at home, and Amy beauty, status, and disciplined art. The novel's moral lessons can be overt, but they are anchored in specific temperaments, mistakes, jealousies, sacrifices, and reconciliations rather than generic virtue.

Its second half is more contested because adulthood reorganizes the early relationships, especially Jo and Laurie's. Yet the refusal to make that friendship a conventional romance is central to the book's argument that affection alone does not guarantee a workable marriage. Beth's decline, Amy's maturation, and Jo's turn toward Professor Bhaer and Plumfield make the ending bittersweet rather than merely tidy.

Yet the refusal to make that friendship a conventional romance is central to the book's argument that affection alone does not guarantee a workable marriage.