Some Ans. Questions 2014 by -'Abdu'l-Bahá- 1 Para

The second group of reincarnationists believe in the next world and see reincarnation as the means of becoming perfect, in that man gradually acquires perfections by departing from and returning again to this world until he attains to the very heart of perfection. That is, man is composed of matter and energy: In the beginning, or in the first cycle, the matter is imperfect, but upon returning repeatedly to this world it progresses and acquires refinement and subtlety until it becomes like a polished mirror; and then the energy, which consists in the spirit, is fully realized therein with all its perfections (81:4)

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