Let me relate several experiences illustrating the nature of auras.
A certain spirit I had known and talked to when he lived in his body later appeared many times in the company of evil spirits. Because he had a high opinion of himself, he had developed an air of superiority to others. And because he was like this, the other spirits suddenly fled, so that none but he could be seen. He then filled up his whole environment in all directions, and the atmosphere was one of concentration on himself. Soon afterward, abandoned by fellow members of his own community as well, he sank into another state. (Those in the other life who are deserted by the community in which they live seem to become half dead at first. At that point, the only thing that keeps them alive is the influence of heaven on their inward capacities.) Then he began to complain and to suffer.
Other spirits later told me that they could not stand to have him near, because he considered himself more important than anyone else. Eventually, having formed ties with a new community, he rose high up and consequently seemed to himself to be governing the universe all alone. (Those are the lengths to which self-love inflates our pride when left to itself.) Afterward he was thrown down among hellish spirits. Such is the lot that awaits those who consider themselves greater than others. More than any other love, self-love is opposed to mutual love, which is the life of heaven.
from Secrets of Heaven, Volume 2, Section 1506