A Doll's House
How we cite our quotes:
NORA: "Tell me, is it really true that you did not love your husband? Why did you marry him?"
MRS. LINDE: "My mother was alive then, and was bedridden and helpless, and I had to provide for my two younger brothers; so I did not think I was justified in refusing his offer." (1.136-1.137)
Mrs. Linde was forced to give up on love in order to save her family.
NORA: "Nonsense! Trying to frighten me like that!--I am not so silly as he thinks. […] And yet--? No, it's impossible! I did it for love's sake." (1.413)
Nora is under the impression that love supersedes the law.
NORA: "You know how devotedly, how inexpressibly deeply Torvald loves me; he would never for a moment hesitate to give his life for me." (2.189)
When Torvald fails to do this at the end of the play, it proves to her that he just doesn't love her as she thinks he should.