 In the course of the religious-political conflicts throughout Europe that followed the Reformation, toleration became one of the central concepts of political-philosophical discourse, yet its history reaches much further back into antiquity (for the following, see esp. Forst 2013, part 1; cf. also Besier and Schreiner 1990, Nederman 2000, Zagorin 2003, Creppel 2003, Kaplan 2007 and Bejan 2017). In stoic writings, especially in Cicero, tolerantia is used as a term for a virtue of endurance, of suffering bad luck, pain and injustice of various kinds in a proper, steadfast manner. But already in early Christian discourse, the term is applied to the challenge of coping with religious difference and conflict. The works of Tertullian and Cyprianus are most important in that respect.