> When Manu Prajapati wishes to incarnate in a fresh form, he has a mental body prepared for him > by evolution of births by a human vibhuti, Suratha or another & takes possession of it at the > beginning of his manvantara. How this works is explained in Q&A, Volume 8, 24 October 1956. If we take the best instance, of someone who has unified his being completely around the divine Presence within him, who is now only one will, one consciousness, this person will have grouped around his central psychic being a fully developed and organised mind, an absolutely surrendered and collaborating vital and an obedient, docile and supple physical being....And so this is what happens, among many other possibilities: it leaves in each domain — in the subtle physical, in the vital, in the mental domain — the corresponding beings; it leaves them with a sort of link between them, but each one keeps its independent existence, and it itself goes into the zone, the reality, the world of the psychic proper, and enters into a blissful repose for assimilation, until it has assimilated (laughing), as described in this paper, all its good deeds, digested all its good deeds, and is ready to begin a new experience. And then, if its work has been well done and the parts or sheaths of its being which it has left in their different domains have acted as they should there, when it descends again, it will put on one after another all these parts which lived with it in a former life, and with this wealth of knowledge and experience it will prepare to enter a new body… This may be after hundreds or thousands of years, for in those domains all that is organised is no longer necessarily subject to the deposition which here we call “death”. As soon as a vital being is fully harmonised, it becomes immortal. What dissolves it and breaks it up are all the disorders within it and all the tendencies towards destruction and deposition; but if it is fully harmonised and organised and, so to say, divinised, it becomes immortal. It is the same thing for the mind. And even in the subtle physical, beings who are fully developed and have been impregnated with spiritual forces do not necessarily dissolve after death.