If you ask any man in this world: "Who is that up?, Who is the dreamer?, Who is the one who is asleep without dreaming? "
answer:
" It's where I wake up, is the I the dreamer, is where I sleep. "
If you ask:
"What is this I?"
I respond:
"This body is the Self."
I would also say that the body is sleeping. When the brain is tired or exhausted, it is the body you sleep, when the brain is disturbed, it is the body that dreams and when the brain is rested, is the body that wakes up after sleep.
A psychologist who has made a special study of the mind will say that the mind, which is based in the brain, is the "I". I would also say that the mind is inseparable from the brain and that it will perish along with the physical body.
The metaphysical and dealing with the spirit arguing that the mind continues to exist somewhere after the death of the body. According to psychologists, metaphysicians and dealing with the spirit, the mind is what wakes the sleeper and the dreamer and the mind is the "I".
A theologian would say that there is a soul that is completely independent of the body and mind and that is the soul that wakes, dreams and sleeps and that the soul is the "I". This soul enters another body according to the law of Karma.
a Vedantin say that neither this body nor the mind nor the soul are the "I". That there is a pure consciousness, or Atman in all beings, which is infinite, eternal, omnipresent, self-existent, Heating, and self-contained, which has no part, is timeless, unborn and that is beyond space and death. The Atman is the real "I". This "I" never wake up, sleep, or dreams. He is the seer or the silent witness (Sakshi) of the three states of waking, dream and sleep. He remains in state Turiya, the fourth state, which transcends the other three states.
is the false "I" called "Ahamkara" or ego, or the Jiva, who wakes, sleeps and dreams. He is awake, the sleeping and dreaming are changing and therefore personalities and unreal.
The true self, the real "I" never wakes nor sleeps, nor dreams. From the standpoint of the Absolute Truth, or Paramartha Satta, no one is awake or asleep, or dreaming.