For the scholar of ancient history, the ‘polis’ is the most important and most worthy subject of study. By ‘polis’ we mean that well-known type of Greek city which with its territory constituted an autonomous state and, in this respect, was quite similar to the centres of the Italian Renaissance. Ancient Hellas was made up of a great number of such ‘polis’ cities. Each of them had its own freedom, its individual pride as an independent republic. But in the over-all picture we recognise in the institution of the polis the ground that nourished the dynamic and in a sense revolutionary spirit of the ancient Greeks. Aeschylus, Sophocles, and Euripides, Cleisthenes and Themistocles, Pericles and Alcibiades, Protagoras and Democritus, Plato and Aristotle were the sons of polis cities. We may even assert that these men could be what they were only in the emancipated and inspired atmosphere of the polis. No other ancient culture could have given them birth. If we consider the Greek polis from the point of view of universal history we come to a rather astonishing conclusion: the polis differs from all other comparable cultural institutions in Asia, Egypt, and Europe by a very fundamental and special trait: Europe knew only a primitive, barbarian, rustic way of life. People were either roving nomads or tillers of the soil who lived in simple villages.