Final answer:
The statement "You shouldn't steal that cake" would come from the superego part of your personality.
Step-by-step explanation:
The statement "You shouldn't steal that cake" would come from the superego part of your personality. According to Sigmund Freud's psychoanalytic theory, the superego is responsible for our moral compass and tells us how we should behave. It develops through social interactions and learning of social rules for right and wrong. The superego strives for perfection and guides our behavior by producing feelings of pride or guilt.