  It is possible for the people to agree to appoint magistrates in spite of the incurable human attraction to the proximal good even when smaller than a remote good, because this predilection only takes effect when the lesser good is immediately at hand. When considering two future goods, people always prefer the greater, and make decisions accordingly.  So looking to the future, people can decide now to empower magistrates to force them to conform to the rules of justice in the time to come so as to preserve society.  When the time comes to obey and individuals are tempted to violate the rules, the long-range threat this poses to society may not move them to desist, but the immediate threat of punishment by the magistrates will.