 Eunapius gives Anatolius and then Porphyry as Iamblichus’ two teachers, and there are no decisive reasons to doubt this: on the one hand, it is evident that he was influenced by the kind of theological arithmology Anatolius championed; on the other hand, Porphyry dedicated his treatise On the “Know thyself” to Iamblichus (Stobaeus, Anthology III, 21, 26) and provides information about the philosopher’s son (Life of Plotinus 9). Since this son is said by Porphyry to have married a Roman aristocrat, it is very likely that Iamblichus studied in Rome under Porphyry, who would have carried on the philosophical circle Plotinus had founded in 244. Dalsgaard Larsen’s (DL-1972: I, 38–39) supposition of a prolonged stay at Alexandria is dubious at best.