bridging the opposites inside himself.  He needs to be able to accept both the male and female in himself, the mind and the emotions, the spiritual and the material, the light and the dark.  For much of his life, Gemini often wanders in a split and dissociated state, trying first one opposite and then the other, before he learns that he can be both.  If you stand in the middle between two struggling opposites, you notice that what you thought was conflict really isn't.  It's complementariness, one thing helping and supporting the other, rather than being mutually exclusive.  Opposite things aren't really enemies at all.  They're part of one holistic view of life.  And that's what Gemini is really after.