Leaving aside the metaphysics, mythology, and sectarian dogma, what contemplatives throughout history have discovered is that there is an alternative to being continuously spellbound by the conversation we are having with ourselves; there is an alternative to simply identifying with the next thought that pops into consciousness. And glimpsing this

“Enlightenment is the space between your thoughts.”

When consciousness is no longer totally absorbed by thinking, some of it remains in its formless, unconditioned, original state. This is inner space.