Reincarnation

Reincarnation:

Literally "to be made flesh again", is a doctrine or metaphysical belief that some essential part of a living being (in some variations only human beings) survives death to be reborn in a new body.

This essential part is often referred to as the spirit or soul, the "higher" or "true" self, "divine spark", or "I".

According to such beliefs, a new personality is developed during each life in the physical world, but some part of the self remains constant throughout the successive lives.

(This reply intended as an informational but not definitive guide based on current scientific theories).