In my childhood, I remember times when children misbehaved in school and my teachers would talk about our consciences. They told us that when someone did something that made them feel bad, those feelings came from an inner voice, called a conscience. They would explain that consciences taught us right from wrong. If what we did was right, then we would feel good, but if what we did was wrong, then we would feel bad. The teachers told us to listen.
Those childhood teachings represented something real. The scriptures call it “the light of Christ”, or “the Spirit of Christ”. This is a universal gift to all mankind.