As the usefulness and powers of the life were not seen in that dark and narrow world, but when it is brought into this vast world, all the use of its growth and development becometh manifest and obvious in it, so likewise, reward and punishment, paradise and hell, and the requital of deeds and actions done by it in the present life become manifest and evident when it is transferred to the world to come—which is far from this world! Had the life and growth of the child in the womb been confined to that condition, then the existence of the child in the womb would have proved utterly abortive and unintelligible; as would the life of this world, were its deeds, actions and their results not to appear in the world to come.
(‘Abdu’l-Bahá, Bahá’í World Faith, p. 392)

Because, when thou lookest with the iron sight, thou wilt find 393 that all mankind is suffering in this earthly world; there is no one in such tranquillity that this state might have been a reward for his good deeds in a former life and there is no soul so happy that this might be the fruit of his past pain! Had the life of a man in his spiritual being been only confined to his life in this world, the creation would have proved useless; the divine qualities would have no result and effect; nay, all things, created beings and the world of creation would have proved abortive. I ask pardon of God for such false imaginations and for such errors!
(‘Abdu’l-Bahá, Bahá’í World Faith, p. 392)

Evolution in the life of the individual starts with the formation of the human embryo and passes through various stages, and even continues after death in another form. The human spirit is capable of infinite development.
(Shoghi Effendi, Lights of Guidance, p. 536)

Have the friends of God found such enjoyments and repose during their existence on this visible earth, that they might wish to have their return renewed and repeated constantly? Are all these calamities, injuries, trials and difficulties of the once coming not sufficient for them that they should wish a repeated life in this world? Hath this cup been of such sweetness that they should long for it successively and repeatedly? No! the friends of the Beauty of El-Bahá never seek any recompense or reward except the meeting and the visit in the Kingdom of El-Bahá; and they never walk but in the valley of desire to attain the Supreme Height. They only wish the immortal blessing and the eternal gift, which are sanctified above the worldly understanding.
(‘Abdu’l-Bahá, Bahá’í World Faith, p. 392)

Man’s identity or rather his individuality is never lost. His reality as a person remains intact throughout the various states of his development. He does not pre-exist in any form before coming into this world.
(Shoghi Effendi, Lights of Guidance, p. 536)

No revelation from God has ever taught re-incarnation; this is a man-made conception. The soul of man comes into being at conception.
(Shoghi Effendi, Lights of Guidance, p. 536)

Question.—What is the truth of the question of reincarnation, which is believed by some people?
Answer.—The object of what we are about to say is to explain the reality—not to deride the beliefs of other people; it is only to explain the facts; that is all. We do not oppose anyone’s ideas, nor do we approve of criticism.
Know, then, that those who believe in reincarnation are of two classes: one class does not believe in the spiritual punishments and rewards of the other world, and they suppose that man by reincarnation and return to this world gains rewards and recompenses; they consider heaven and hell to be restricted to this world and do not speak of the existence of the other world. Among these there are two further divisions. One division thinks that man sometimes returns to this world in the form of an animal in order to undergo severe punishment and that, after enduring this painful torment, he will be released from the animal world and will come again into the human world; this is called transmigration. The other division thinks that from the human world one again returns to the human world, and that by this return rewards and punishments for a former life are obtained; this is called reincarnation. Neither of these classes speak of any other world besides this one.
The second sort of believers in reincarnation affirm the existence of the other world, and they consider reincarnation the means of becoming perfect—that is, they think that man, by going from and coming again to this world, will gradually acquire perfections, until he reaches the inmost perfection. In other words, that men are composed of matter and force: matter in the beginning—that is to say, in the first cycle—is imperfect, but on coming repeatedly to this world it progresses and acquires refinement and delicacy, until it becomes like a polished mirror; and force, which is no other than spirit, is realized in it with all the perfections.
This is the presentation of the subject by those who believe in reincarnation and transmigration. We have condensed it; if we entered into the details, it would take much time. This summary is sufficient. No logical arguments and proofs of this question are brought forward; they are only suppositions and inferences from conjectures, and not conclusive arguments. Proofs must be asked for from the believers in reincarnation, and not conjectures, suppositions and imaginations.
But you have asked for arguments of the impossibility of reincarnation. This is what we must now explain. The first argument for its impossibility is that the outward is the expression of the inward; the earth is the mirror of the Kingdom; the material world corresponds to the spiritual world. Now observe that in the sensible world appearances are not repeated, for no being in any respect is identical with, nor the same as, another being. The sign of singleness is visible and apparent in all things. If all the granaries of the world were full of grain, you would not find two grains absolutely alike, the same and identical without any distinction. It is certain that there will be differences and distinctions between them. As the proof of uniqueness exists in all things, and the Oneness and Unity of God is apparent in the reality of all things, the repetition of the same appearance is absolutely impossible. Therefore, reincarnation, which is the repeated appearance of the same spirit with its former essence and condition in this same world of appearance, is impossible and unrealizable. As the repetition of the same appearance is impossible and interdicted for each of the material beings, so for spiritual beings also, a return to the same condition, whether in the arc of descent or in the arc of ascent, is interdicted and impossible, for the material corresponds to the spiritual.
Nevertheless, the return of material beings with regard to species is evident; so the trees which during former years brought forth leaves, blossoms and fruits in the coming years will bring forth exactly the same leaves, blossoms and fruits. This is called the repetition of species. If anyone makes an objection saying that the leaf, the blossom and the fruit have been decomposed, and have descended from the vegetable world to the mineral world, and again have come back from the mineral world to the vegetable world, and, therefore, there has been a repetition—the answer is that the blossom, the leaf and the fruit of last year were decomposed, and these combined elements were disintegrated and were dispersed in space, and that the particles of the leaf and fruit of last year, after decomposition, have not again become combined, and have not returned. On the contrary, by the composition of new elements, the species has returned. It is the same with the human body, which after decomposition becomes disintegrated, and the elements which composed it are dispersed. If, in like manner, this body should again return from the mineral or vegetable world, it would not have exactly the same composition of elements as the former man. Those elements have been decomposed and dispersed; they are dissipated in this vast space. Afterward, other particles of elements have been combined, and a second body has been formed; it may be that one of the particles of the former individual has entered into the composition of the succeeding individual, but these particles have not been conserved and kept, exactly and completely, without addition or diminution, so that they may be combined again, and from that composition and mingling another individual may come into existence. So it cannot be proved that this body with all its particles has returned; that the former man has become the latter; and that, consequently, there has been repetition; that the spirit also, like the body, has returned; and that after death its essence has come back to this world.
If we say that this reincarnation is for acquiring perfections so that matter may become refined and delicate, and that the light of the spirit may be manifest in it with the greatest perfection, this also is mere imagination. For, even supposing we believe in this argument, still change of nature is impossible through renewal and return. The essence of imperfection, by returning, does not become the reality of perfection; complete darkness, by returning, does not become the source of light; the essence of weakness is not transformed into power and might by returning, and an earthly nature does not become a heavenly reality. The tree of Zaqqum, no matter how frequently it may come back, will not bring forth sweet fruit, and the good tree, no matter how often it may return, will not bear a bitter fruit. Therefore, it is evident that returning and coming back to the material world does not become the cause of perfection. This theory has no proofs nor evidences; it is simply an idea. No, in reality the cause of acquiring perfections is the bounty of God.
The Theosophists believe that man on the arc of ascent will return many times until he reaches the Supreme Center; in that condition matter becomes a clear mirror, the light of the spirit will shine upon it with its full power, and essential perfection will be acquired. Now, this is an established and deep theological proposition, that the material worlds are terminated at the end of the arc of descent, and that the condition of man is at the end of the arc of descent, and at the beginning of the arc of ascent, which is opposite to the Supreme Center. Also, from the beginning to the end of the arc of ascent, there are numerous spiritual degrees. The arc of descent is called beginning, and that of ascent is called progress. The arc of descent ends in materialities, and the arc of ascent ends in spiritualities. The point of the compass in describing a circle makes no retrograde motion, for this would be contrary to the natural movement and the divine order; otherwise, the symmetry of the circle would be spoiled.
Moreover, this material world has not such value or such excellence that man, after having escaped from this cage, will desire a second time to fall into this snare. No, through the Eternal Bounty the worth and true ability of man becomes apparent and visible by traversing the degrees of existence, and not by returning. When the shell is once opened, it will be apparent and evident whether it contains a pearl or worthless matter. When once the plant has grown it will bring forth either thorns or flowers; there is no need for it to grow up again. Besides, advancing and moving in the worlds in a direct order according to the natural law is the cause of existence, and a movement contrary to the system and law of nature is the cause of nonexistence. The return of the soul after death is contrary to the natural movement, and opposed to the divine system.
Therefore, by returning, it is absolutely impossible to obtain existence; it is as if man, after being freed from the womb, should return to it a second time. Consider what a puerile imagination this is which is implied by the belief in reincarnation and transmigration. Believers in it consider the body as a vessel in which the spirit is contained, as water is contained in a cup; this water has been taken from one cup and poured into another. This is child’s play. 287 They do not realize that the spirit is an incorporeal being, and does not enter and come forth, but is only connected with the body as the sun is with the mirror. If it were thus, and the spirit by returning to this material world could pass through the degrees and attain to essential perfection, it would be better if God prolonged the life of the spirit in the material world until it had acquired perfections and graces; it then would not be necessary for it to taste of the cup of death, or to acquire a second life.
The idea that existence is restricted to this perishable world, and the denial of the existence of divine worlds, originally proceeded from the imaginations of certain believers in reincarnation; but the divine worlds are infinite. If the divine worlds culminated in this material world, creation would be futile: nay, existence would be pure child’s play. The result of these endless beings, which is the noble existence of man, would come and go for a few days in this perishable dwelling, and after receiving punishments and rewards, at last all would become perfect. The divine creation and the infinite existing beings would be perfected and completed, and then the Divinity of the Lord, and the names and qualities of God, on behalf of these spiritual beings, would, as regards their effect, result in laziness and inaction! “Glory to thy Lord, the Lord Who is sanctified from all their descriptions.”
Such were the limited minds of the former philosophers, like Ptolemy and the others who believed and imagined that the world, life and existence were restricted to this terrestrial globe, and that this boundless space was confined within the nine spheres of heaven, and that all were empty and void. Consider how greatly their thoughts were limited and how weak their minds. Those who believe in reincarnation think that the spiritual worlds are restricted to the worlds of human imagination. Moreover, some of them, like the Druzes and the 288 Nusayris, think that existence is restricted to this physical world. What an ignorant supposition! For in this universe of God, which appears in the most complete perfection, beauty and grandeur, the luminous stars of the material universe are innumerable! Then we must reflect how limitless and infinite are the spiritual worlds, which are the essential foundation. “Take heed ye who are endued with discernment.”
But let us return to our subject. In the Divine Scriptures and Holy Books “return” is spoken of, but the ignorant have not understood the meaning, and those who believed in reincarnation have made conjectures on the subject. For what the divine Prophets meant by “return” is not the return of the essence, but that of the qualities; it is not the return of the Manifestation, but that of the perfections. In the Gospel it says that John, the son of Zacharias, is Elias. These words do not mean the return of the rational soul and personality of Elias in the body of John, but rather that the perfections and qualities of Elias were manifested and appeared in John.
A lamp shone in this room last night, and when tonight another lamp shines, we say the light of last night is again shining. Water flows from a fountain; then it ceases; and when it begins to flow a second time, we say this water is the same water flowing again; or we say this light is identical with the former light. It is the same with the spring of last year, when blossoms, flowers and sweet-scented herbs bloomed, and delicious fruits were brought forth; next year we say that those delicious fruits have come back, and those blossoms, flowers and blooms have returned and come again. This does not mean that exactly the same particles composing the flowers of last year have, after decomposition, been again combined and have then come back and returned. On the contrary, the meaning is that the delicacy, freshness, delicious perfume and wonderful color of the flowers of last year are visible and apparent in exactly the same manner in the flowers of this year. Briefly, this expression refers only to the resemblance and likeness which exist between the former and latter flowers. The “return” which is mentioned in the Divine Scriptures is this: it is fully explained by the Supreme Pen in the Kitáb-i-qán. Refer to it, so that you may be informed of the truth of the divine mysteries. Upon you be greetings and praise.
(‘Abdu’l-Bahá, Some Answered Questions, p. 282-289)

The Bahá’í view of ‘reincarnation’ is essentially different from the Hindu conception. The Bahá’ís believe in the attributes and qualities, but maintain that the essence or the reality of things cannot be made to return. Every being keeps its own individuality, but some of his qualities can be transmitted. The doctrine of metempsychosis upheld by the Hindus is fallacious.
(Shoghi Effendi, Lights of Guidance, p. 536)

The subject of reincarnation has two aspects. One is that which the Hindustani people believe, and even that is subdivided into two: reincarnation and metempsychosis. According to one belief the soul goes and then returns in certain reincarnations; therefore, they say that a sick person is sick because of actions in a previous incarnation and that this is retribution. The other school of Hinduism believes that man sometimes appears as an animal—a donkey, for instance—and that this is retribution for past acts. I am referring to the beliefs in that country, the beliefs of the schools.
(‘Abdu’l-Bahá, The Promulgation of Universal Peace, p. 166)

This is the adornment of man, his honor and sublimity. Humanity must strive toward this supreme station. Christ has interpreted this station as the second birth. Man is first born from a world of darkness, the matrix of the mother, into this physical world of light. In the dark world from whence he came he had no knowledge of the virtues of this existence. He has been liberated from a condition of darkness and brought into a new and spacious realm where there is sunlight, the stars are shining, the moon sheds its radiance, there are beautiful views, gardens of roses, fruits and all the blessings of the present world. How did he attain these blessings? Through the agency of birth from the mother. Just as man has been physically born into this world, he may be reborn from the realm and matrix of nature, for the realm of nature is a condition of animalism, darkness and defect. In this second birth he attains the world of the Kingdom. There he witnesses and realizes that the world of nature is a world of gloom, whereas the Kingdom is a world of radiance; the world of nature is a world of defects, the Kingdom is a realm of perfection; the world of nature is a world without enlightenment, the Kingdom of spiritual humanity is a heaven of illumination. Great discoveries and revelations are now possible for him; he has attained the reality of perception; his circle of understanding is illimitably widened; he views the realities of creation, comprehends the divine bounties and unseals the mystery of phenomena. This is the station which Christ has interpreted as the second birth. He says that just as ye 333 were physically born from the mother into this world, ye must be born again from the mother world of nature into the life of the divine Kingdom.
(‘Abdu’l-Bahá, The Promulgation of Universal Peace, p. 332)

Though the fact of “Return” is mentioned in the Divine Books, by this is intended the return of the qualities, characters, perfections, truths and lights, which re-appear in every age, and not of certain persons and souls. For example: If we say this lamp is the return of that of last night, or that the last year’s flower hath returned in the garden, in this sense the return of the individual, or identity, or personality is not meant; nay, rather, it is intended that the same qualities and states existing in that lamp or flower, which are now seen in this lamp or flower, have returned. That is, the same perfections and virtues and properties which existed in the past springtime have returned during this present springtime. For instance: When one says, these fruits are the same as those of last year; in this sense, he hath reference to the freshness and delicacy of the fruit, which hath returned, although there is no doubt that the identical fruit of last year hath not returned.
(‘Abdu’l-Bahá, Bahá’í World Faith, p. 392)

We know from His Teachings that Reincarnation does not exist. We come on to this planet once only. Our life here is like the baby in the womb of its mother, which develops in that state what is necessary for its entire life after it is born. The same is true of us. Spiritually we must develop here what we will require for the life after death. In that future life, God, through His Mercy, can help us to evolve characteristics which we neglected to develop while we were on this earthly plane. It is not necessary for us to come back and be born into another body in order to advance spiritually and grow closer to God. This is the Bahá’í Teaching, and this is what the followers of Bahá’u’lláh must accept, regardless of what experiences other people may feel they have. You yourself must surely know that modern psychology has taught that the capacity of the human mind for believing what it imagines, is almost infinite. Because people think they have a certain type of experience, think they remember something of a previous life, does not mean they actually had the experience, or existed previously. The power of their mind would be quite sufficient to make them believe firmly such a thing had happened.
(Shoghi Effendi, Lights of Guidance, p. 538)