One of the three types of mind.
"The Inner Mind is
fundamental for the direct experience of the truth. Undoubtedly, the
Inner Mind creates its basic concepts with information contributed by
the Superlative Consciousness of the Being. Unquestionably, the
Consciousness can live and experience reality. Without a doubt, the
Consciousness knows the truth. To manifest itself however, the
Consciousness needs a mediator, an instrument of action, and this in
itself is the Inner Mind. Consciousness knows directly the reality of
each natural phenomenon and can manifest it through the Inner Mind...
One who has opened the Inner Mind recalls one’s previous existences,
knows the mysteries of life and death; not because of what one has or
has not read, not because of what someone has or has not said, not
because of what one has or has not believed, but because of terribly
real and vivid direct experience." - Samael Aun Weor, The Great Rebellion