It was said above that the angels have not wings, as is commonly supposed. Their power of progression far exceeds anything that wings could supply. They have no idea of space, such as we have in the world. All who are of like disposition spontaneously associate together in the spiritual world. It thus follows that those are near each other who are in a similar state, and distant who are in a dissimilar state; and that what appears to be space in heaven is merely an external appearance, representative of internal differences of mind. From this cause alone the heavens are distinct from each other, and each society of heaven, and every individual in each society. Hence also the hells are altogether separated from the heavens. From the same cause, any one in the spiritual world appears to be present if another intensely desires his presence; for from that desire he sees him in thought, and puts himself in his state. Again one person is removed from another in proportion as he holds him in aversion; for all aversion is from contrariety of the affections and disagreement of the thoughts; therefore many who appear together in one place in the spiritual world, so long as they agree, separate as soon as they disagree. Further: when any one goes from one place to another, whether it be in his own city, in the courts, or the gardens, or to others out of his own city, he arrives sooner when he has a strong desire to be there, and later when his desire is less strong; the way itself being lengthened or shortened according to his desire of arrival. Hence again it is evident that distances, and consequently spaces, exist with the angels altogether according to the state of their minds. These principles settle that often asked question, “Shall we know each other in the future life?” We shall, if we are in the same state as to love and truth; but if in different states, we shall not, but shall be separate; and, moreover, we shall have no desire for acquaintance. The only friendships in heaven are those formed on the ground of similarity of character. If this similarity does not exist,—with the exception perhaps of a short meeting in the world of spirits—death is an everlasting, though in such case not a mournful, farewell.