(post #2) if you can find the time, good sir.
In order to properly understand the rational behind reincarnation, one must understand the origin of the spirit-soul. Specifically, is the spirit-soul created at the moment of conception, or is it eternal? Those who believe in reincarnation hold that the spirit is eternal. Bhaktivinoda Thakur writes the following in numerous books:
A
jiva is a spark of the eternal consciousness. The rays of the Lord's transcendental body are known as the brahma-jyoti, and a pencil of a ray of the
brahma-jyoti is the jiva. The brahma-jyoti, the non-differentiated marginal plane, is the source of infinite jiva souls, atomic spiritual particles of non-differentiated character. The constituent particles, in the form of pencils of effulgence of
Maha-Visnu are manifest as the individual souls (jivas). The jiva soul is an atom in that effulgence, and the brahma-jyoti is a product of an infinite number of jiva atoms. Generally, souls emanate from the brahma-jyoti which is living and growing. The jiva-souls are emanated from the jiva-sakti of Sri Krsna (God) and they are spiritual but atomic.
The
jiva-purusa should inquire about two locations, the material world and the spiritual world. The jiva appeared by the marginal energy at the dividing line between spirit and matter. The jiva is situated in a third position, called
svapna sthana, on the border between these two places. A jiva is first situated on the line of demarcation between the material world and the spiritual world. Situated in this marginal place, he can see both the material and spiritual worlds.
In the very self of the jiva-soul or in his constitution practically there remains no
maya. Within the brahma-jyoti, their equilibrium is somehow disturbed and movement begins. From non-differentiation, differentiation begins. From a plain sheet of uniform consciousness, individual conscious units grow. Although spiritual and conscious by nature, the jiva lives on the border between the spiritual and material worlds. From that position, he began to gaze at the spiritual and material worlds. And because the jiva is conscious it is endowed with free will. So, from the marginal position they choose either the side of exploitation or the side of dedication. When it chooses to enter the material world, it becomes contaminated by the
modes of nature (i.e., goodness, passion, and ignorance). That is said to be the spirit soul.
Before acquiring material designations, the living entity is supremely pure. Even though he is not engaged in serving the Supreme Lord, he remains situated in the neutral position of
santa-rasa due to his marginal nature. Though the living entity born from the marginal potency does not at that time exhibit a taste for serving the Lord due to a lack of knowledge of self-realization, his direct propensity of serving the Supreme Lord nevertheless remains within him in a dormant state. Though the indirect propensity of material enjoyment, which is contrary to the service of the Lord, is not found in him at that time, indifference to the service of Hari and the seed of material enjoyment, which follows that state of indifference, are nevertheless present within him. The living entity, who belongs to the marginal potency, cannot remain indifferent forever by subduing both devotional and non-devotional propensities. He therefore contemplates unconstitutional activities from his marginal position. As a sleeping person dreams that he is active in the physical world without actually being involved in activities, when the dormant indifferent living entity of the marginal potency exhibits even a little apathy to the service of the Supreme Lord and situates himself in a neutral, unchanging condition for even a little time, he is infected by impersonalism. That is why the conditioned soul desires to merge in the impersonal Brahman, thus exhibiting his mind's fickle nature. But due to neglecting the eternal service of the Lord and thereby developing the quality of aversion to the Lord, he cannot remain fixed in that position. In this way aversion to the Lord breaks his concentration of mind and establishes him as the master of this world of enjoyment.
Due to being situated in the marginal position, living entities who are averse to Hari assume the nature of mixed consciousness; in other words, when the marginal energy living entities mix with the external energy, they consider themselves the enjoyers and then enter the material world. The cause of the spirit soul's coming to live in this world in aversion to Krsna is his misuse of his free will. When this aversion becomes strong, the living entities accept a material mind and body in order to enjoy the temporary material world and thus come under the control of fruitive reactions.
Because the soul is very small, his freedom is also imperfect; a soul in the marginal position is very vulnerable. As jiva-souls are atomic in size and being emanated from the tatastha-sakti of Sri Krsna (viz. from the intermediary-potency which exists in between cit-jagat and mayika-jagat) jiva-soul is liable to be subjected to maya when he becomes averse to his constitutional right of serving the Lord. Those who, by their own free will, became bewildered and became greedy for maya situated on the opposite side, being beckoned by maya, then became attracted to the material universe, and were thrown in the universe by
Karanarnavasayi Visnu, the controller of maya. That was but the result of their eternal aversion to the Supreme Lord. The moment they entered the material realm, they became overcome by ignorance, the function of maya. Overcome by ignorance, they fell into the wheel of binding karma in order to become fully absorbed in their task. Jiva-soul in bondage misconstrues himself as the doer and enjoyer, therefore is affinated to the adopted bodies that are provided by
prakrti. When the thoughts of a jiva in the tatastha realm, which is in between the spiritual and material worlds, gravitates towards independence and its accompanying temporal, material pleasures; the immediate result is forced descent to the material universes. The satanic frenzy in which the jiva dislikes the blissful and eternal service of his Master and prefers to quench his thirstful desires of enjoying matter, opens before him a perpetual spring of liquid fire and poison at which he begins to drink deep. Thus in going to lord it over Maya, jiva became enslaved by her.
The root of all actions is the desire for acts, the root of which again is
avidya. Avidya is the name for the forgetfulness of soul's essential nature that 'I am Krsna's servant.' And those who forget Krsna and give themselves up to maya's enjoyments, maya with her own force draws them into herself. It is from that very moment that we fall into the misery of this world. The moment that the jivas desire to enjoy independently while gazing at the two banks of the river, they become averse to Krsna (God), who is like the sun.
This avidya did not commence within the course of the mundane time. That root of karma of the jiva arose when he was at the tatastha position. As such, the beginning of karma is not to be traced within mundane time, and, on that account karma is beginning-less.
Freedom does not mean absolute freedom. Because the soul's existence is small, his freedom is defective, there is the possibility of committing a mistake. Freedom of the minute soul does not mean perfect freedom. Complete freedom would be perfect reality, but the minute soul is endowed with the smallest atomic freedom. This is the position of the atoms of consciousness, and this is why they are vulnerable. They may judge properly or improperly; that is the position of those who are situated in the marginal position. If the soul were not endowed with the freedom to determine his position, we would have to blame God for our suffering. But we cannot blame God. The starting point of the soul's suffering is within himself.
Those jivas who were attracted somewhat to realization of the Supreme Person became desirous of the spiritual realm because of that contact of knowledge. They then obtained strength from the hladini potency of the abundant cit sakti, which made them favorable to the Lord eternally, and they were brought into the spiritual world as associates of the Lord. There those jivas who do not forget their relation with Krsna derive the power of consciousness and are drawn into the spiritual world, they come in eternal touch with Krsna and enjoy beatitude arising from the worship of Krsna. Lying in between the cit (internal spiritual) and acit (external deluding cosmic) potencies of the Lord, the jiva souls are freed from the shackles of the triple qualities of maya by the loving service to the Supreme Lord Sri Krsna. A jiva by dint of spiritual virtue may possess steadfast devotion to Sri Krsna and getting rid of worldly affinity goes back to the abode of bliss.