 Why doesn't Tommy want to go back to the Farm?
"He's gone completely hay-wire. Nobody's been able to get near him for three weeks, and now at six o'clock this morning he decides he's leaving the Farm. If Tommy's in the trouble I think he's in, we don't dare risk a chance of Adult Contact now. As director of psionic research at the Hoffman Medical Center, he had long since learned how administrative detail could suck up daytime hours. And now, as the book approached publication date, Lessing wondered if he would ever really get back to work again. And the more they struggled, the thicker and more impenetrable the bramble bush became— But now David Lessing had discovered a pathway through that jungle, a theory to work by— At his elbow the intercom buzzed. "I think you'd better wait before you do that," Melrose said sharply, "because I'm planning to take you apart at the Conference next month unless I like everything I see and hear down here today. "I want to hear this fairy tale you're about to publish in the name of 'Theory'," Melrose said. "I want to see this famous Farm of yours up in Connecticut and see for myself how much pressure these experimental controls you keep talking about will actually bear. "So far, we haven't found any way to set up logical controls," said Melrose. "We haven't been energetic enough to find an orthodox approach that got us anywhere.
 He doesn't feel good at the farm.
 Tommy misses his family and he wants to go home.  Tommy is tired of being experimented on.  Tommy is slowly going insane at the farm.  He doesn't feel good at the farm.