"What answer?"
"How do I get rid of the engineer? One of us has got to go, and being the stable, happy one, I feel that all in all I am the best adjusted and therefore the most likely to succeed. After all, I am the ideal personality according to the other one. He'd like to be me. That's why he is, from time to time."
"Sort of a figment of your own imagination."
"That's me."
"Then I wonder—Yet, I did accept his case, not yours."
"Whose case?"
"Um ... ah ... I—Look, if you frustrate him to the extreme, he'll retreat into you more and more until he does not appear. Follow?"
"I get it. O.K., doctor. He'll be the most frustrated engineer in the world. And I am just the guy to do it."
Tom Lionel, Consulting Engineer, looked foolishly at the claw hammer in one hand and wondered about it. About him in the laboratory were stacks of huge packing cases.