the Ego

(c) [I don't know]

I started off complaining about the ego with the assumption that you all know it. Pardon my ignorance.

Scientists explained the self, mind, or conscious differently, the most famous is Sigmund Freud's psyche model. 

Freud divided the self into three parts: Id, Ego and Super Ego.

Freud wrote of das Es, das Ich, and das Über-Ich—respectively, "the It," "the I," and the "Over-I" (or "Upper-I") [Wikipedia]

Id is the one wanting and desiring.

Super Ego is the guy that carries the book of values and a stick.

Ego is the part that every person shows to the rest of the world. The tip of the iceberg. The personality.