In a sense doing all those dictionary slips was his medication; in a way they became his therapy. The routine of his quiet and cellbound intellectual stimulus, month upon month, year upon year, appears to have provided him with at least a measure of release from his paranoia. His sad situation only worsened when that stimulus was gone: when the great book ceased to function as his lodestone, when the one fixed point on which his remarkable but tortured brain was able to concentrate became detached, so then he began to spiral downward, and his life began to ebb.
