 Does meeting one’s obligations to others serve one’s self-interest? Plato and his successors recognized that in certain cases, the answer seems to be “No.” Hobbes (1651, pp. 101–102) considers the challenge of a “Foole”, who claims that it is irrational to honor an agreement made with another who has already fulfilled his part of the agreement. Noting that in this situation one has gained all the benefit of the other’s compliance, the Foole contends that it would now be best for him to break the agreement, thereby saving himself the costs of compliance. Of course, if the Foole’s analysis of the situation is correct, then would the other party to the agreement not anticipate the Foole’s response to agreements honored, and act accordingly?