Full Idea
It has been suggested that one criterion for a good moral system is that it should be possible to demand reciprocity from every individual because of the good the system renders to him.
Gist of Idea
A good moral system benefits its participants, and so demands reciprocity
Source
Philippa Foot (Morality, Action, and Outcome [1985], p.104)
Book Reference
Foot,Philippa: 'Moral Dilemmas' [OUP 2002], p.104
A Reaction
Money seems to have this feature, that we mostly conform to the rules for its use, because we value the whole system. Foot accepts this, but says there are also other criteria, such as leaving freedom to live well (ie. not too puritanical).