Lecture I

And then there is a third thing, the life within the world of thought. It is not so well known that the human being acquires this of himself, from that part of his inner nature which be carries on from one incarnation to another. The elaboration of the brain is undertaken because the brain is the instrument of thought. At the beginning of life, this organ is still plastic, because the individual has to form it for himself as an instrument of thought, in accordance with the intention of the entity which proceeds from one incarnation to another. The brain immediately after birth is, as it was bound to be, in consonance with the forces inherited from parents and other ancestors. But the individual has to express in his thought what he is as an individual being in conformity with his former earthly lives. Therefore he must re-model the inherited peculiarities of his brain, after birth, when he has become physically independent of his parents and other ancestors.