" What is distinctive about the customs surrounding hospitality in [archaic Greek] culture is that elite men who have entered one another's homes and have been entertained appropriately are understood to have created a bond of "guest-friendship" (xenia) between their households that will continue into future generations. ... It is created not by proximity and kinship, but by a set of behaviors that create bonds between people who are geographically distant from each other. Xenia is thus a networking tool that allows for the expansion of Greek power, from the unit of the family to the city-state and then across the Mediterranean world. It is the means by which unrelated elite families can connect to one another as equals, without having to fight for dominance. ... The poem's episodes can be seen as a sequence of case studies in the concept of xenia. "

― Emily Wilson , The Odyssey