 Watson and Hartley (2018) rest public justification on respect for persons and reciprocity. Vallier (2019, 2020) grounds a PJP in the value of social trust or trust between members of society (though see Tahzib 2021). Neo-Hobbesian views have seen a revival in the work of Moehler (2018) and Vanderschraaf (2018); they have much more developed theories of instrumental rationality as a basis for public justification.