One of the seven bodies of the human being. Related to Netzach, the
seventh sephirah of the Tree of Life; corresponds to the fifth
dimension. In Egyptian mysticism, it is called Ba. In Hinduism, is it called vijnanmayakosha or kama manas (some Hindu teachers think the mental body is "manomayakosha," but that is the astral body).
"The mental body is a material organism, yet it is not the physical
organism. The mental body has its ultra-biology and its internal
pathology, which is completely unknown to the present men of science."
- Samael Aun Weor, The Revolution of Beelzebub.