The headword phrase is presumably extracted from the quotation, on which see next note.
[1] For a shorter and different version of this quotation see under xi 122. Here, with a proper name, there is more scope to identify its context, at least. The Capito in question is surely C. Fonteius Capito, one of the consuls of AD 59, who as proconsul in Germany a decade later was murdered for his opposition to Galba (Plutarch, Galba 15.2; Suetonius, Galba 11). As to the quotation itself, Favuzzi [see under delta 654] 222-224 argues for its attribution to John of Antioch (himself using Cassius Dio).