Of these three powers the kingdom of the Lagidæ is most firmly welded together, being in full possession of all the resources that trade and sea power, money and politics, afford. To re-establish the universal monarchy was never its aim, even when circumstances seemed to tempt to it. But as long as strong rulers wear the crown it always stands on the offensive against the other two; it harasses them continually, hinders them at every step from consolidating, wrests from the Seleucidæ almost all the coast towns of Palestine and Phœnicia as far as Thrace, temporarily gains control of the islands of the Ægean, and supports every hostile movement that is made in Greece against Macedonia. The Greek mother-country is thus continually forced anew into the struggle, the play of intrigue between the court of Alexandria and the Macedonian state never gives it an opportunity to become settled. All revolts of the Greek world received the support of Alexandria; the uprising of Athens and Sparta in the war of Chremonides (264), the attempt of Aratus to give the Peloponnesus an independent organisation by means of the Achæan league (beginning in 252), and finally the uprising of Sparta under Cleomenes. The aim of giving the Greek world an independent form was never attained; finally, when at the end of the reign of Ptolemy III Euergetes (221) the kingdom of the Lagidæ withdraws and lets Cleomenes fall, the peninsula comes anew under the supremacy of the Macedonians, whom Aratus the “liberator” had himself brought back to the citadel of Corinth. But neither can the Macedonian king attain the full power that Philip and Alexander had possessed a century earlier; in particular, its resources are insufficient, even in alliance with the Achæans, to overthrow the warlike, piratical Ætolian state, which is constantly increasing in power. So Greece never gets out of these hopeless conditions; on the contrary, indeed, through the emigration of the population to the Asiatic colonies, through the decay of a vigorous peasant population which began as early as in the fourth century, through the economic decline of commerce and industry caused by the shifting of the centre of gravity to the east, its situation becomes more and more wretched and the population constantly diminishes. It can never attain peace of itself, but only through an energetic and ruthlessly despotic foreign rule.
In the East, on the contrary, an active and hopeful life developed. The great kings of the Lagidæan kingdom, the first three Ptolemies, fully appreciated the importance of intellectual life to the position of their kingdom in the world. All that Greek culture offered they tried to attract to Alexandria, and they managed to win for their capital the leading position in literature and science. But in other respects the kingdom of the Lagidæ is by no means the state in which the life of the new time reaches its full development. However much, in opposition to the Greek world, in conflict with Macedonia, they coquette with the Hellenic idea of liberty, within their own jurisdiction they cannot endure the independence and the free constitution of the Greek
The development in Asia follows a very different course. Here, through the activity of the great founders of cities, Antigonus, Lysimachus, Seleucus I, and Antiochus I, one Greek city arises after another, from the Hellespont through Asia Minor, Syria, Mesopotamia, Babylonia, Media, as far as Bactria and India; and from them grow the great centres of culture, full of independent life, by which the Asiatic population is introduced to the modern world-civilisation and becomes Hellenised. Antigonus deliberately supported the independence of the cities within the great organic body of the kingdom, thus following on the lines of the Hellenic league under Philip and Alexander. By the pressure of political necessity and the fact that they could maintain their power only by winning the attachment and fidelity of their subjects, the Seleucidæ were forced into the same ways. And side by side with the great kingdom the political struggle creates a great number of powers of the second rank, in part pure Greek communities, like Rhodes, Chios, Cyzicus, Byzantium, Heraclea, in part newly formed states of Greek origin, like the kingdom of Pergamus and later the Bactrian kingdom, in part fragments of the old Persian kingdom, like Bithynia, Pontus, Cappadocia, Armenia, Atropatene, and not much later the Parthian kingdom. Among these states the eastern retain their oriental character, while the western are forced to pass more and more into the culture of Hellenism.