I don't think Nouwen realized the cultural significance of the words "Twilight Zone" in his writing - but I like the natural metaphor it brings separate from the t.v. show.
There is a twilight zone in our own hearts that we ourselves cannot see. Even when we know quite a lot about ourselves - our gifts and weaknesses, our ambitions and aspirations, our motives and drives - large parts of ourselves remain in the shadow of consciousness.
This is a very good thing. We always will remain partially hidden to ourselves. Other people, especially those who love us, can often see our twilight zones better than we ourselves can. The way we are seen and understood by others is different from the way we see and understand ourselves. We will never fully know the significance of our presence in the lives of our friends. That's a grace, a grace that calls us not only to humility but also to a deep trust in those who love us. It is in the twilight zones of our hearts where true friendships are born.
and another from Jean Vanier:
We feel small and weak, but we are gathered together to signify the power of God who transforms death into life. That is our hope, that God is doing the impossible: changing death to life inside of each of us, and that perhaps, through our community, each one of us can be agents in the world of this transformation of brokenness into wholeness, and of death into life.