" He recognized that need, in Odonian terms, as his " cellular function." the analogic term for the individual's individuality, the work he can do best, therefore his best contribution to his society. A healthy society would let him exercise that optimum function freely, in the coordination of all such functions finding its adaptability and strength. That was a central idea of Odo's Analogy. That the Odonian society on Anarres had fallen short of the ideal did not, in his eyes, lessen his responsibility to it; just the contrary. With the myth of the State out of the way, the real mutuality and reciprocity of society and the individual became clear. Sacrifice mught be demanded of the individual, but never compromise: for though only the society could give security and stability, only the individual, the person, had the power of moral choice -- the power of change, the essential function of life. The Odonian society was conceived as a permanent revolution, and revolution begins in the thinking mind. "