What is the theme in This Is Our Youth by Kenneth Lonergan?

Another theme in the book is Identity. Each of the main characters must find a clear sense of identity in order to make the transition into adulthood. The two who appear to have accomplished this are Dennis and Jessica, yet during the course of the play, they reveal the illusory nature of their images of self. While Warren has not established a firm sense of his own self by the end of the play, he has been able to see the true nature of those around him, which suggests that he will then eventually be able to gain a clearer vision of himself.