Legatio Ad Gaium
Philo Judaeus
The works of Philo Judaeus, the contemporary of Josephus, volume 4. Yonge, C. D., translator. London: Henry G. Bohn, 1855.
This is the consequence of doing kindnesses to ungrateful people; for in return for the benefits which they have received, they inflict the greatest of injuries on those from whom they have received them. Accordingly, Macro, who had done everything in sincerity with the most earnest eagerness and zeal for the good of Caius, in the first place in order to save him from death, and afterwards in order that he by himself might succeed to the imperial authority, received for his reward the fate which I have mentioned.