What metaphors are used in Many Lives, Many Masters by Brian L. Weiss?

In one particular dream, Weiss addresses in the text, he asks about equality and how obvious it is that we are all so different. Some of us are poor, others rich, some healthy, others sickly, temperaments vary, as do talents and intelligence with math, music and even success varies. The response uses a diamond as a metaphor for the soul, comparing its thousand facets as covered with dirt that must be wiped clean. The soul's objective is to wipe each facet until it reflects brilliance. Once every vice is polished off each one of our thousand facets, the diamond or soul is perfect and flawless.