31. It needs to be known that after death a person ceases to be a natural man and becomes a spiritual man, but he looks to himself exactly the same, and is so much the same that he is unaware that he is no longer in the natural world. He has the same kind of body, face, speech and senses, because in affection and thought, or in will and intellect, he remains the same. He is in fact not really the same, because he is then spiritual, and so his inner man. But he cannot see the difference, because he is unable to compare his present state with his earlier, natural, one, since he has put that off and has put on his other state. I have therefore often heard people say that they are quite unaware of not being in their former world, but for the fact that they can no longer see those whom they left in that world, and they do see those who have departed from it, that is, who have died. The reason, however, why they see the latter but not the former is that they are not natural, but spiritual or substantial* people. A spiritual or substantial person can see a spiritual or substantial person, just as a natural or material person can see another natural or material person. But they cannot see each other because of the difference between the substantial and the material, which is similar to the difference between what is prior and what is posterior. The prior being inherently more pure is invisible to the posterior, which is inherently more gross, nor can the posterior, being more gross, be seen by the prior, which is inherently more pure. It follows that an angel is invisible to a person in this world, and such a person is invisible to an angel.