One concept that I would like to have seen developed more fully in this monograph is that of authenticity. Despite the use of the term "authentic" in the title and its description as a "strength" (p. 147), Seligman seems to have largely missed an opportunity to explore this important concept in depth for defining optimal human existence and experience. Moreover, I should imagine that Positive Psychology would be interested in the fact that many contemporary psychodynamic therapeutic approaches (such as those of Sullivan, Kohut, Fairbairn, Winnicott, and others), while initially directed at the alleviation of negative emotional states, actually have as their goal the development of an authentic experience of oneself that is built on the genuine (i.e., not false) experience of emotion and interpersonal relations as well as an integrated and real experience of meaning and purpose. In short, contemporary psychoanalysis, in some quarters, seeks to allow individuals to come to know themselves and to be themselves with authenticity. Importantly, in this view, genuine experience concerns not only that which is positive in our emotional lives but also that which is negative (i.e., authentic sorrow and anger). Indeed, the search for authenticity in human experience, in all emotional realms, is the goal of optimal development.