MEM = Water or Seas
Planet = Neptune
Tarot = Hanged Man = Suspend the mind
"This Key is full of meaning for an occultist. Its primary meaning is Reversal. This refers to the reversal of thought, of point of view held by those who know from that held by the unenlightened multitude. The adept realizes that his existence is dependent upon Cosmic Law. Another meaning of the card is Suspended Mind, which the Hindus name Samadhi, in which exalted mental state the aspirant reaches the Divine Consciousness of Pure Being. The letter Mem means Water or seas, and refers to Root Matter as do the crescents and upper garment. (See Key 2.)"