This is a philosophical statement. It is intended to spark thinking and examining.
Remy: “Oh, please. I’m sick of pretending. I pretend to be a rat for my father, I pretend to be a human for Linguini. I pretend you exist so I have someone to talk to! You only tell me stuff I already know! I know who I am! Why do I need you to tell me? Why do I need to pretend?”
Gusteau: “Ahhh, but you don’t Remy. You never did.”