Demetrius

And now Seleucus, who had once been expelled from Babylonia by Antigonus, but had afterwards succeeded in recovering the realm and was now wielding the power there, went up with an army, designing to annex the tribes on the confines of India and the provinces about Mount Caucasus. Demetrius, accordingly, expecting that he would find Mesopotamia unprotected, suddenly crossed the Euphrates and invaded Babylonia before Seleucus could stop him. He expelled from one of its citadels (there were two of them) the garrison left there by Seleucus, got it into his power and established in it seven thousand of his own men.

But after ordering his soldiers to take and make booty of everything which they could carry or drive from the country, he returned to the sea-coast, leaving Seleucus more confirmed than before in his possession of the realm; for by ravaging the country Demetrius was thought to admit that it no longer belonged to his father. However, while Ptolemy was besieging Halicarnassus, Demetrius came swiftly to the aid of the city and rescued it.

The glory won by this noble deed inspired father and son with a wonderful eagerness to give freedom to all Greece, which had been reduced to subjection by Cassander and Ptolemy. No nobler or juster war than this was waged by any one of the kings; for the vast wealth which they together had amassed by subduing the Barbarians, was now lavishly spent upon the Greeks, to win glory and honour.

As soon as father and son had determined to sail against Athens, one of his friends said to Antigonus that they must keep that city, if they took it, in their own hands, since it was a gangway to Greece. But Antigonus would not hear of it; he said that the goodwill of a people was a noble gangway which no waves could shake, and that Athens, the beacon-tower of the whole world, would speedily flash the glory of their deeds to all mankind.