Candidus was a Christian teacher, active at the beginning of the 3rd century CE. Very little is known about him. The first explicit reference to Candidus is made by Jerome, who in his critique of Rufinus of Aquileia’s apology for Origen (Jer. Ruf. 2.18–19) indicates that there was a theological dispute, evidently at Athens, between Origen and Candidus, whom Jerome regarded as Valentinian. The written dialogue of the dispute, to which Jerome referred in his text, is no longer extant. Rufinus is a…