Introduction : discovering practical reason
Gyges' choice : rationality and visibility
Glaucon's dilemma : origins of social order
Deioces' ultimatum : how to choose a ruler
Solon's bargain : self-enforcing constitutional order
Melos' prospect : limits of inter-state rationality
Socrates' critique : problems for democratic rationality
Cephalus' expertise : economic rationality
Conclusions : utility and eudaimonia
Appendix : probability, risk, and likelihood.