A convict’s thoughts are no freer than he is: they come back to the same place, worry over the same thing continually. Will they poke around in my mattress and find my bread ration? Can I get off work if I report sick tonight? Will the captain be put in the hole, or won’t he? How did Tsezar get his hands on his warm vest? Must have greased somebody’s palm in the storeroom, what else?