WHO OR WHAT IS DOING IT?

Who or what is living life?

Life is living life, and it has its own agenda.

Its agenda is the resolution of opposites.

The push of night leads to the pull of day.  The pull of day leads to the push of night.  The push of birth leads to the pull of death.  The pull of death leads to the push of birth.  War becomes peace.  Peace becomes war.  Every opposite is countered its counterpart in a never-ending cycle.