This is a really amazing passage from an item on Metahistory about Gnostic cosmology. It’s from an apocryhpal Gnostic text called The Dialogue of the Savior:

You are the pure mind and the serenity of the soliitary. Hear this, and understand that the Elect are self-selecting. Through consecration… in the place where there is no rule, no tyranny, the reasoning power… inner truth… lives… in order that you prevail.

But the crossing place is fearful… Only with a single one-pointed mind, can you pass over… The lamp of the body is the mind. As long as what is within your minds is harmonious, your bodies are luminous. As long as your hearts are dark, the luminosity you anticipate will escape you…

Who does not stand in the darkness, will not be able to see the light.