Even Pinocchio had a conscience.
When my grandson visits, I ask him to read to me to keep his skills honed. On his last visit, he chose to read "Pinocchio." In the story, Geppetto wishes that Pinocchio would come to life like a real boy. After Geppetto falls asleep, the Blue Fairy appears. She waves her wand, and Pinocchio comes to life. And right after, the Blue Fairy charges Jiminy Cricket to be his conscience and to teach him between right and wrong.