“
As Aristotle implied, throughout their history the ancient Greeks never constituted a nation in the modern sense because their various independent states never united politically. In fact, they often fought wars with one another. On the other hand, Greeks saw themselves as sharing a cultural identity because they spoke dialects of the same language, had similar customs, worshipped the same gods (with local variations in cults), and came together at international religious festivals, such as the celebration of the mysteries of the goddess Demeter at Athens or the athletic games at Olympia in the Peloponnese. Ancient Greece was thus a set of shared ideas and practices rather than a sharply demarcated territorial or national entity. How this sense of Greek cultural identity came to be and how it was maintained over the centuries are difficult questions that must be kept constantly in mind. That its mountainous topography contributed to the political fragmentation of Greece seems clear.
”
”
Thomas R. Martin (Ancient Greece)