All of which, of course, amounts to nothing, since everything and everyone will be ashes soon enough. That is Justine’s state of mind, and Ms. Dunst is remarkably effective at conveying both the acute anguish and the paralyzing hollowness of depression. To the extent that the destructive potential of Melancholia is a metaphor for her private melancholia, it is perfectly apt. One of the chief torments of serious depression is how disproportionate and all-consuming the internal, personal sorrow can feel.