After this battle Pyrrhus, returning gloriously home, enjoyed his fame and reputation, and being called "Eagle" by the Epirots, "By you," said he, "I am an eagle; for how should I not be such, while Ihave your arms as wings to sustain me?" A little after, having intelligence that Demetrius was dangerously sick, he entered on a sudden into Macedonia, intending only an incursion, and to harass the country; but was very near seizing upon all, and taking the kingdom without a blow. He marched as far as Edessa unresisted, great numbers deserting and coming in to him. This danger excited Demetrius beyond his strength, and his friends and commanders in a short time got a considerable army together, and with all their forces briskly attacked Pyrrhus, who, coming only to pillage, would not stand a fight, but retreating, lost part of his army, as he went off, by the close pursuit of the Macedonians. Demetrius, however, although he had easily and quickly forced Pyrrhus out of the country, yet did not slight him, but having resolved upon great designs, and to recover his father's kingdom with an army of one hundred thousand men, and a fleet of five hundred ships, would neither embroil himself with Pyrrhus, nor leave the Macedonians so active and troublesome a neighbour; and since he had no leisure to continue the war with him, he was willing to treat and conclude a peace, and to turn his forces upon the other kings. Articles being agreed upon, the designs of Demetrius quickly discovered themselves by the greatness of his preparation. And the other kings, being alarmed, sent to Pyrrhus ambassadors and letters, expressing their wonder that he should choose to let his own opportunity pass by, and wait till Demetrius could use his; and whereas he was now able to chase him out of Macedon, involved in designs and disturbed, he should expect till Demetrius at leisure, and grown great, should bring the war home to his own door, and make him fight for his temples and sepulchres in Molossia;especially having so lately, by his means, lost Corcyra and his wife together. For Lanassa had taken offence at Pyrrhus for too great an inclination to those wives of his that were barbarians, and so withdrew to Corcyra, and desiring to marry some king, invited Demetrius, knowing of all the kings he was most ready to entertain offers of marriage; so he sailed thither, married Lanassa, and placed a garrison in the city. The kings having written thus to Pyrrhus, themselves likewise contrived to find Demetrius work, while he was delaying and making his preparations. Ptolemy, setting out with a great fleet, drew off many of the Greek cities. Lysimachus out of Thrace wasted the upper Macedon; and Pyrrhus, also taking arms at the same time, marched to Beroea, expecting, as it fell out, that Demetrius, collecting his forces against Lysimachus, would leave the lower country undefended. That very night he seemed in his sleep to be called by Alexander the Great, and approaching saw him sick abed, but was received with very kind words, and much respect, and promised zealous assistance. He making bold to reply, "How, sir, can you, being sick, assist me?" "With my name," said he, and mounting Nisaean horse, seemed to lead the way. At the sight of this vision he was much assured, and with swift marches overrunning all the interjacent places, takes Beroea, and making his headquarters there, reduced the rest of the country by his commanders. When Demetrius received intelligence of this, and perceived likewise the Macedonians ready to mutiny in the army, he was afraid to advance further, lest, coming near Lysimachus, a Macedonian king, and of great fame, they should revolt to him. So returning, he marched directly against Pyrrhus, as a stranger, and hated by the Macedonians. But while he lay encamped there near him, many who came out of Beroea infinitely praised Pyrrhus as invincible in arms, a glorious warrior, who treated those he had taken kindly and humanely. Several of these Pyrrhus himself sent privately, pretending to be Macedonians, and saying, now was the time to be delivered from the severe government of Demetrius by coming over to Pyrrhus, a gracious prince and a lover of soldiers. By this artifice a great part of the army was in a state of excitement, and the soldiers began to look every way about inquiring for Pyrrhus. It happened he was without his helmet, till understanding they did not know him, he put it on again, and so was quickly recognized by his lofty crest and the goat's horns he wore upon it. Then the Macedonians, running to him, desired to be told his password, and some put oaken boughs upon their heads, because they saw them worn by the soldiers about him. Some persons even took the confidence to say to Demetrius himself, that he would be well advised to withdraw and lay down the government. And he, indeed, seeing the mutinous movements of the army to be only too consistent with what they said, privately got away, disguised in a broad hat and a common soldier's coat. So Pyrrhus became master of the army without fighting, and was declared King of the Macedonians.
But Lysimachus now arriving, and claiming the defeat of Demetrius as the joint exploit of them both, and that therefore the kingdom should be shared between them, Pyrrhus, not as yet quite assured of the Macedonians, and in doubt of their faith, consented to the proposition of Lysimachus, and divided the country and cities between them accordingly. This was for the present useful, and prevented a war; but shortly after they found the partition not so much a peaceful settlement as an occasion of further complaint and difference. For men whose ambition neither seas, nor mountains, nor unpeopled deserts can limit, nor the bounds dividing Europe from Asia confine their vast desires, it would be hard to expect to forbear from injuring one another when they touch and are close together.