How to define the mind? Is it limited to our body? What is its nature? Does it survive us? In what does the spirit differ from the soul? Is man the only thinking being? If the perception of consciousness is an intrinsic property of the brain, the consciousness, the unconsciousness and the memory are more complex mental processes.When we meditate or dream, the brain is put at rest and our consciousness thus released can access levels of higher knowledge, some collectives.The quantum mind is divided into a bodily and a non local part,the brain ensuring the interface of memory, consciousness and unconsciousness delocated.