 Related to publicity is that principles should be universal in application. This implies not simply that “they hold for everyone in virtue of their being moral persons” (TJ 132/114 rev.). It also means that everyone can understand the principles of justice and use them in their deliberations. Universality in application then imposes a limit on how complex principles of justice can be—they must be understandable to common moral sense, and not so complicated that only experts can apply them in deliberations. For among other things, these principles are to guide democratic citizens in their judgments and shared deliberations about just laws and policies. 