" George told me that there was a hierarchy of spirits and that the one who visited him in his dream wasn't necessarily at the highest level. There are other places and other dimensions that are even higher and do not belong to the Earth. Still, we have to learn the lessons of the Masters because the important thing was to progress, he said.
...
His blue spirit told him that we see the past lifetimes that are important to this one.
...
"You develop your skills. You work on your talents. It doesn't stop. "

― Brian L. Weiss , Same Soul, Many Bodies: Discover the Healing Power of Future Lives through Progression Therapy