William T. Riker in “Unfinished Business”

[regarding Data] The Commander is a physical representation of a dream. An idea conceived of by the mind of a man, its purpose to serve human needs and interests. It's a collection of neural nets and heuristic algorithms, its responses dictated by an elaborate software written by a man, its hardware built by a man, and now... and now a man will shut it off. [Riker deactivates Data in front of Picard and Louvois.] Pinocchio is broken; its strings have been cut.