Sri Aurobindo
Letters of Sri Aurobindo
8. Rebirth
The psychic being’s choice at the time of death does not work out the next formation of personality, it fixes it. When it enters the psychic world, it begins to assimilate the essence of its experience and by that assimilation is formed the future psychic personality in accordance with the fixation already made. When this assimilation is over, it is ready for a new birth; but the less developed beings do not work out the whole thing for themselves, there are beings and forces of the higher world who have that work. Also, when it comes to birth, it is not sure that the forces of the physical world will not come across the working out of what it wanted – its own new instrumentation may not be strong enough for that purpose; for, there is the interaction of its own energies and the cosmic forces here. There may be frustration, diversion, a partial working out – many things may happen. All that is not a rigid machinery, it is a working out of complex forces. It may be added, however, that a developed psychic being is much more conscious in this transition and works out much of it itself. The time depends also on the development and on a certain rhythm of the being – for some there is practically immediate rebirth, for others it takes longer, for some it may take centuries; but here, again, once the psychic being is sufficiently developed, it is free to choose its own rhythm and its own intervals. The ordinary theories are too mechanical-and that is the case also with the idea of puṇya and pāpa and their results in the next life. There are certainly results of the energies put forth in a past life, but not on that rather infantile principle. A good man’s suffering in this life would be a proof according to the orthodox theory that he had been a very great villain in his 
past life, a bad man’s prospering would be a proof that he had been quite angelic in his last visit to earth and sown a large crop of virtues and meritorious actions to reap this bumper crop of good fortune. Too symmetrical to be true. The object of birth being growth by experience, whatever reactions come to past deeds must be for the being to learn and grow, not as lollipops for good boys of the class (in the past) and canings for the bad ones. The real sanction for good and ill is not good fortune for the one and bad fortune for the other, but this that good leads us towards a higher nature which is eventually lifted above suffering, and ill pulls us towards the lower nature which remains always in the circle of suffering and evil.