I watched an interview with Carrie Fisher years ago where she was talking about her struggle with drug abuse. She said something that I thought was quite inciteful, "I am but a spy in the house of myself."

I think the opposite is equally true.

"There is a real you. Unfortunately, it's you."

"That's ridiculous", said the hivemind-module of a mobile megafortress powered by a swarm of nanomachines.