The Real You

by Rabbi Aryeh Kaplan

What is the root of immortality and the soul?

Look at your hand. What do you see?

A part of your body, an appendage made of bone and sinew covered with flesh and skin. It is filled with nerves, blood vessels and lymph ducts which run through it and connect it to your body, making it part of you.

You can open and close your hand. It obeys every command that your mind sends to it. It is yours -- a part of you. But what are you? Who is the real you? What happens when you tell your hand to open and close? How does your mind will it to obey its commands?

Now point a finger at yourself. If you are an average person, you will point a finger at your chest. You think of yourself as your body. But is your body the real you?

Not too long ago, a person could consider his own body an integral part of himself. You were your body and your body was you. But this is no longer the case. Scientific progress has changed the entire concept of human personality and identity.

Heart transplants are now an almost commonplace occurrence. They do not even make the news anymore. A person can live with another person's heart beating in his breast. If we would ask such a person to point to himself, would he point at his heart? Is this transplanted heart really part of him? Is the heart that beats within your breast the real you? Or is it something else entirely?

Researchers are predicting that within the next decade or two, brain transplants maybe possible. This would force us to completely re-evaluate the concept of human personality.

Imagine what it would be like to undergo a brain transplant. A man might be suffering from an incurable disease in his body, but still have a healthy brain. The donor, on the other hand, would have suffered irreparable brain damage, but otherwise have a perfectly sound body. The brain is removed from the sick body and placed in the healthy one.

Who is the new man? We have an old brain with all its memories, personality traits and behaviour patterns. But it has a brand new body. The old body might have been old and sick, while the new one may be young and full of energy.

Let us ask this man to point to himself. Will he point to his body? Is the real you your body or your brain?

(Actually, an analogous question is raised in the Talmud. In the case of an unsolved murder, a special sacrifice, the Eglah Arufah, was brought by the city nearest the corpse. The Talmud raises two questions: What if the head is found in one place and the body in another? And if the body is equidistant from the two cities, from what portion of the body do we measure?)


A brain transplant raises enough questions. How about a memory transfer?

The science of cybernetics has discovered many similarities between computers and the human brain. Computer technology allows one to program a memory transfer, taking all the information contained in one computer and transferring it to another. All that passes from one computer to the other is information.

What if this were done with the human brain? This may lie in the realm of science fiction, but even if it will never be possible in practice, it is certainly possible in theory.

Let us try to envision such a memory transfer. Assume we have a person with an incurable disease where neither the body nor the brain can be salvaged. We clone a new body for this individual, brain and all. The possibilities of doing this have already been discussed at length in the literature. This new body has a blank, new brain, capable of functioning, but without any memories or thought patterns. As a final step, we accomplish a memory transfer, bringing all the information from the sick person into the brain of the new body.

We now have a fascinating situation. If all of a man's memories, thought patterns and personality traits are transferred to a new body and brain, this personality literally exists in his new body. But nothing physical has been transferred. No physical part of him has been placed in the new body. All that has been placed in this new body is information that previously existed in the old brain. Yet this information contains the sum total of this person's personality.

If this is true, then it offers us tremendous new insight into our original question: Who is the real you?

The real you is not your body or brain, but the information contained in your brain -- your memories, personality traits and thought patterns.

(The philosophical Kabbalists write that the spiritual world is a realm whose substance is information. It is an arena where information can interact without being attached to or dependent on matter. Thus, an angel, for example, can interact with another angel, even though they have no connection with anything material. Angels can also interact with material objects. Such a spiritual world would also be able to interact with the information comprising the human personality.)


What happens then when a person dies?

We know that the body ceases to function. The brain becomes inert and the physical person is dead.

But what happens to the real you -- the human personality? What happens to all this information -- the memories, thought patterns and personality traits? When a book is burned, its contents are no longer available. When a computer is smashed, the information within it is also destroyed.

Does the same thing happen when a person dies? Is the mind and personality irretrievably lost?

We know that God is omniscient. He knows all and does not forget. God knows every thought and memory that exists within our brains. There is no bit of information that escapes His knowledge.

What, then, happens when a person dies?

God does not forget, and therefore all of this information continues to exist, at least in God's memory.

(An allusion to this is also found in the Kaballah. Gan Eden or Paradise is said to exist in the sefirah of Binah -- the divine understanding. This may well be related to the concept of memory. Souls, on the other hand, are conceived in the sefirah of Daas -- knowledge. One may say that while we live, we exist in God's knowledge; after death we exist in His memory.)

We may think of something existing only in memory as being static and effectively dead. But God's memory is not a static thing. The sum total of a human personality may indeed exist in God's memory, but it can still maintain its self-identity and volition, and remain in an active state.

This sum total of the human personality existing in God's memory is what lives on even after man dies...


But what is immortality like? What is it like to be a disembodied soul? How does it feel to be in the World of Soul?

We know that the human brain, marvellous organ that it is, is still very inefficient as a thinking device. Henri Bergson has suggested that one of the main functions of the brain and nervous system is to eliminate activity and awareness, rather than produce it.

In "The Doors of Perception," Aldous Huxley quotes Prof. C.D. Broad's comments on this. He says that every person is capable of remembering everything that has ever happened to him. He is able to perceive everything that surrounds him. However, if all this information poured into our minds at once, it would overwhelm us. So the function of the brain and nervous system is to protect us and prevent us from being overwhelmed and confused by the vast amount of information that impinges upon our sense organs. They shut out most of what we perceive and remember. All that would confound us is eliminated and only the small, special selection that is useful is allowed to remain.

Huxley explains that our mind has powers of perception and concentration that we cannot even begin to imagine. But our main business is to survive at all costs. To make survival possible, all of our mind's capabilities must be funnelled through the reducing valve of the brain.

Some researchers are studying this effect. They believe that this reducing-valve effect may be very similar to the jamming equipment used to block out offensive radio broadcasts. The brain constantly produces a kind of static, cutting down our perception and reducing our mental activity.

This static can actually be seen. When you close your eyes, you see all sorts of random pictures flashing through your mind. It is impossible to concentrate on any one of them for more than an instant, and each image is obscured by a host of others superimposed over it.

This static can even be seen when your eyes are opened. However, one usually ignores these images since they are so faint compared to our visual perception. However, they still reduce one's perception, both of the world around him and of himself.

Much of what we know about this static is a result of research done with drugs that eliminate it. According to a number of authorities, this is precisely how the psychedelic drugs work.


There is another dimension of immortality discussed in the Talmud (Brachot 18b). It asks: Do the dead know what is happening in the world of the living?

After an involved discussion, the Talmud concludes that they do have this awareness. The Kabbalistic philosophers explain that the soul achieves a degree of unity with God, the source of all knowledge, and therefore also partakes of His omniscience.

When a person dies, he enters a new world of awareness. He exists as a disembodied soul and yet is aware of what is happening in the physical world. Gradually, he learns to focus on any physical event he wishes. At first this is a frightening experience. You know that you are dead. You can see your body lying there, with your friends and relatives standing around crying over you. We are taught that immediately after death, the soul is in a great state of confusion.

What is the main source of its attention? What draws its focus more than anything else?

We are taught that it is the body. Most people identify themselves with their bodies, as we have discussed earlier. It is difficult for a soul to break this thought habit, and therefore, for the first few days, the soul is literally obsessed with its previous body. This is alluded to in the verse, "And his soul mourns for him" (Job 14:22).

This is especially true before the body is buried. The soul wonders what will happen to the body. It finds it to be both fascinating and frightening to watch its own body's funeral arrangements and preparation for burial.

Of course, this is one of the reasons why Judaism teaches us that we must have the utmost respect for human remains. We can imagine how painful it is for a soul to see its recent body cast around like an animal carcass. The Torah therefore forbids this.

This is also related to the question of autopsies. We can imagine how a soul would feel when seeing its body lying on the autopsy table, being dissected and examined.

The disembodied soul spends much of its time learning how to focus. It is now seeing without physical eyes, using some process which we do not even have the vocabulary to describe. The Kabbalists call this frightening process Kaf HaKela -- like being thrown with a sling from one end of the world to another. It is alluded to in the verse, "The soul of my master shall be bound up in the bundle of life with the Lord your God, and the souls of your enemies shall He sling out, as from the hollow of a sling" (1-Samuel 25:29). The soul perceives things flashing into focus from all over, and is in a state of total confusion and disorientation.

One of the few things that the soul has little difficulty focusing on is its own body. It is a familiar pattern and some tie seems to remain. To some extent, it is a refuge from its disorientation.


The more one is obsessed with one's body and the material world in general during his lifetime, the more he will be obsessed with it after death. For the person to whom the material was everything, this deterioration of the body is most painful.

On the other extreme, the person who was immersed in the spiritual may not care very much about the fate of his body at all. He finds himself very much at home in the spiritual realm and might quickly forget about his body entirely...

Many of us think of death as a most frightening experience. Tzaddikim, on the other hand, have looked forward to it. Shortly before his death, Rabbi Nachman of Breslav said, "I very much want to divest myself of this garment that is my body."

If we truly believe and trust in a merciful God, then death has no terror for us...


Reprinted with permission, from "If You Were God" (NCSY-OU)

Author Biography:
Rabbi Aryeh Kaplan was a multi-faceted, prolific exponent of Jewish thought -- skilled in both Kabbalah and Jewish law, as well as the natural sciences (he was listed in "Who’s Who in Physics"). He suffered an untimely death at age 48.



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