Do you believe in all this World Sorrow?
I adore this dialogue between Lucy and Mr. Emerson because when compared to the conversation she has with him in one of the last scenes, it's apparent how much she's changed. Or not even changed-- rather, stopped repressing her feelings.
I love the idea of a book itself rejecting the literary movement of Weltschmerz ("world sorrow"-- coined by a German and used widely by Lord Byron and other British authors). The whole idea of Weltschmerz would always exist because one can never fully realize one's dreams. I think the book itself critiques the movement and thus, Edwardian Society, because in this case it's only the restrictions of society (adhering to "proper" behavior) that maintain this World Sorrow.
When he says "poor girl," it seems to me that he is referring to her holding herself back from happiness even though she recognizes the fallacies behind "World Sorrow" as it is applicable to Edwardian Society.
What is your interpretation of this conversation?