Conscience is an eight year old girl in Lisa's mind, along with Jealousy, Honesty and Libido. She is the biggest of them.
History
Lisa reads Marge's book The Harpooned Heart and Marge asks her for the review. Lisa reflects for a while.
In her mind, Conscience calms down Jealousy and Honesty who are angry about the book. She then told Libido that she will be let out of her cage when they are sixteen.
