Leila Ahmed describes the "ideal of seclusion" as a "a man's right to keep his women concealed—invisible to other men." Ahmed identifies the practice of seclusion as a social ideal and one of the major factors that shaped the lives of women in the Mediterranean Middle East. For example, contemporary sources from the Byzantine Empire describe the social mores that governed women's lives. Women were not supposed to be seen in public. They were guarded by eunuchs and could only leave the home "veiled and suitably chaperoned." Some of these customs were borrowed from the Persians, but Greek society also influenced the development of patriarchal tradition.