The psychic being at its origin is only a spark of the divine consciousness and it is through successive lives that it builds up a conscious individuality.It is a progress similar to that of a growing child. For a long time, in most human beings the psychic is a being in the making. It is not a fully individualised, fully conscious being and master of itself and it needs all its rebirths, one after another, in order to build itself and become fully conscious.But this sort of progress has an end. There comes a time when the being is fully developed, fully individualised, fully master of itself and its destiny. When this being has reached that stage and takes birth in a human being, that makes a very great difference: the human being, so to say, is born free. The being is not tied to circumstances, to surroundings, to one’s origin and atavism, like ordinary people. The being comes into the world with the purpose of doing something, with a work to carry out and a mission to fulfill. From this point of view such a person’s progress in growth has come to an end, that is, it is not indispensable for them to take birth again in a body. Till then rebirth is a necessity, for it is through rebirth that one grows; it is in the physical life and in a physical body that one gradually develops and becomes a fully conscious being.But once one is fully formed, one is free, in this sense that one can take birth or not, at will.