Going back to the origin is called peace; it means reversion to destiny. Reversion to destiny is called eternity. Those who know eternity are called enlightened.
LaoziThe universe is deathless; Is deathless because, having no finite self, it stays infinite. A sound man by not advancing himself stays the further ahead of himself, By not confining himself to himself sustains himself outside himself: By never being an end in himself he endlessly becomes himself.
Laozi