The third justification of the doctrine of public reason is the Stability Argument. This argument emphasizes the alleged psychological fact that citizens are more likely to support principles and institutions that they themselves see as just (Rawls 1996: 140–4; Weithman 2011). This implies that, if we want to extend the life-expectancy of our institutions, then we should favour principles and institutions that will predictably generate their own support (Freeman 2007b: ch. 3). This counts in favour of the doctrine of public reason, whose defining claim is that we may appeal only to those reasons that we can reasonably expect others to endorse.