An importand pair of IDEAs is UNIFICATION and DISSOZIATION. Much of the universe is made by those.
Very strong photons can unite to a single entity and immediately dissoziate into an electron and a positron.
The spirit of young humans can also dissoziate if life becomes too tough and it can unite again.
A must read: The Flock: The Autobiography of a Multiple Personality.
UNIFICATION and DISSOZIATION are spiritual capabilities.
There is only a spiritual universe.