Fear

You are not of the world, you are not even in the world. The world is not, you alone are. You create the world in your imagination like a dream. As you cannot separate the dream from yourself, so you cannot have an outer world independent of yourself. You are independent, not the world. Don't be afraid of a world you yourself have created. Nisargadatta Maharaj.

We are afraid to approach the fathomless and bottomless groundlessness of everything. "There's nothing to be afraid of" The ultimate reassurance and the ultimate terror.  R.D. Laing

Fear comes when there is a second.  Brihadaranyaka Upanishad

Some of you will remember that in that very basic Mahayana Buddhist scripture, the Diamond Sutra, it says that if you can look into your emptiness and not be somewhat scared, congratulations! Because it is a very uncommon thing. We have a great fear of looking this way because it is a kind of death. If you are scared of it I congratulate you because it means you have got it. I say, go on with it and you will come out at the other end. Beyond the fear is the experience of death, what I call the Present Death Experience. And then Bang! the resurrection. So you die as one tiny little lump of stuff and you explode to become the lot, you are resurrected to become the lot. So if you feel a little bit scared I would say that is absolutely great. Stay with it and it will come right. Douglas Harding.

Men are afraid to forget their minds, fearing to fall through the Void with nothing to stay their fall. They do not know that the Void is not really void, but the realm of the real Dharma. Huang Po. 

Luke Skywalker: I'm not afraid.
Yoda: You will be, you will be...
The Empire Strikes Back