In chapter 9 of Ender's Game, what is the significance of the unicorn, the dragon, and the exit with Valentine from the End of the World?
In this chapter, Card tries to set up some Jungian symbols to imitate the dramatic psychological relationships among the siblings in the Wiggin family. In this dream sequence, Ender is sorting out (in his dream state) the relationship, first, between his brother and sister, who have taken on the personae of Demosthenes and Locke. Both fantasy figures, the dragon and the unicorn represent, in Ender’s dream, the destructive force (the dragon) of abstract world-change and the positive, idyllic side (the unicorn) of world-change. Underneath the surface plot of this book is the philosophical question of whether the (real) world is on a brutal train of beliefs and ideologies that constantly repeats and rejuvenates the destructive ideologies that bring out vicious leaders. The room at the End of the World is where the siblings must free themselves to break the chain of destructive and cruel human behavior (represented by Peter). Card is not entirely successful in conveying this theme here, largely because the children are so young, and the thought and ideas and representations they conjure up are beyond their years, not because they can’t intellectually understand them but because their emotional intelligence has not matured to this point.