Along the lines of Rava’s advice to refrain from cutting meat on one’s hands: Rabbi Akiva said: In three aspects of their conduct, I like the Medes. When they cut meat, they cut it only on the table and not on their hands; when they kiss, either as a show of affection or honor, they kiss only the back of the hand; and when they hold counsel, they only hold counsel in the field.
It was taught in a baraita, Rabban Gamliel said: In three aspects of their conduct, I like the Persians: they are modest in their eating, they are modest in the lavatory, and they are modest in another matter, i.e., sexual relations.
The Gemara offers another perspective on the Persians based on a verse describing the destruction of Babylonia at the hands of the Persian and Medean armies: “I have commanded My consecrated ones; I have also called My mighty ones for My anger, even My proudly exulting ones” (Isaiah 13:3). Rav Yosef taught a baraita: These are the Persians who are consecrated and designated for Gehenna, for they have been sent by God to carry out his mission of anger, and they will be sent to Gehenna.