Jane could have no reserves from Elizabeth where confidence would give pleasure; and instantly embracing her, acknowledged with the liveliest emotion that she was the happiest creature in the world.
"’Tis too much!" she added, "by far too much. I do not deserve it. Oh! why is not everybody as happy?"

– Jane Austen

Pride and Prejudice, Chapter 55. Jane is overcome with emotion after Charles Bingley proposes marriage to her. She embraces her sister Elizabeth and says that she is the happinest creature in the world.