Identifying a lie can sometimes be quite problematic. Some individuals may occasionally claim to detect deception simply by noticing the behavior of someone accused. This gut feeling is not at all defined in definite terms and may in fact be incorrect. On the other hand, one possible way to expose a lie involves revealing an idea that is definitely true, such as with an article that has been written. The documents are usually quite accurate, because once an idea is put on paper it becomes quite difficult to retract it. In fact, the written words refer to the truth and, if understood by the spectator, can expose the lies of those around him. Taking it a step further means putting truthful documents into someone else's hands, perhaps in the form of a letter or note via the post office. In his play A Doll House Ibsen included three articles of mail to symbolize the truth, and thus reveal some of the lies perpetrated by Nora. The first important document is the letter written by Krogstad towards the end of the second act in which he explains the conditions of his blackmail. This letter contains all the evidence that incriminates Nora of her appalling crime of forgery. Krogstad makes sure to base his accusation on factual information, confirmed by Nora herself, so his letter is one hundred percent correct. Because she shows no desire to reveal any part of her story, the letter represents the only means by which Nora's true actions will be revealed. Therefore, as this letter sits ominously in the mailbox, it symbolizes the truth surrounding Nora's past. Although this letter is an embodiment of the truthfulness of Nora's debts, Ibsen specifically included it to reveal two types of deception she performed. His first... half a sheet... him. However, Torvald's real character is nothing like Nora's imagined character, as he very quickly gives in to Krogstad's demands after assessing the situation. She initially experiences denial, because she has forced herself to believe that Torvald will come to her rescue. The third piece of mail shows Nora the truth about her husband and makes her realize how he mistreats her. Therefore, he reveals the lie she tricked herself into believing, that Torvald is not the man she wanted to believe he was. Indeed, it could be argued that Nora never loved Torvald, and any love expressed in marriage was itself a lie. In that case the note also reveals the façade they assumed during their marriage. Ibsen used the letter symbolizing the true nature of Nora's husband to highlight the lie she chose to believe about their relationship.