Lactantius

“ He sat on his tribunal, and saw innocent men tormented by fire to make discovery. All magistrates, and all who had superintendency in the imperial palace, obtained special commissions to administer the torture; and they strove with each other who should be first in bringing to light the conspiracy. No circumstances, however, of the fact were detected anywhere; for no one applied the torture to any domestics of Galerius. He himself was ever with Diocletian, constantly urging him, and never allowing the passions of the inconsiderate old man to cool. ”