From Arcana Coelestia ~ Emanuel Swedenborg
Before a man by regeneration from the Lord comes to good, and does truth from good, he has very many falsities mixed with truths; for he is introduced by means of truths of faith respecting which in his first age he had no other ideas than those of infancy and childhood; which ideas, as they arise from the external things of the world and the sensuous things of the body, cannot but be classed among fallacies, and consequently among falsities. These also become actual, for what a man believes, he does. ...They remain with a man until he is regenerate, that is, until he acts from good, and then the good that is, the Lord through the good reduces into order the truths so far learned, and when this is done, falsities are separated from the truths and are removed.Of all this the man is quite ignorant, and yet there is such a removal and rejection of falsities from his earliest childhood even to his last age, and this with every man, but especially with him who is being regenerated. The like takes place even with a man who is not being regenerated, for when he becomes an adult, and his judgment has attained its maturity, he then regards the judgments of his childhood as vain and absurd, and thus as removed far away from him. But the difference between the regenerate man and the unregenerate is that the regenerate regards those things as removed from him which do not agree with the good of faith and charity, but the unregenerate those which do not agree with the delight of the love in which he is. The latter therefore for the most part regards truths as falsities and falsities as truths.
(from Arcana Coelestia 4551)