There ambassadors came to him from Syrmus, king of the Triballians, and from the other independent nations dwelling near the Ister. Some even arrived from the Celts who dwelt near the Ionian gulf.[48] These people are of great stature, and of a haughty disposition. All the envoys said that they had come to seek Alexander’s friendship. To all of them he gave pledges of amity, and received pledges from them in return. He then asked the Celts what thing in the world caused them special alarm, expecting that his own great fame had reached the Celts and had penetrated still further, and that they would say that they feared him most of all things. But the answer of the Celts turned out quite contrary to his expectation; for, as they dwelt so far away from Alexander, inhabiting districts difficult of access, and as they saw he was about to set out in another direction, they said they were afraid that the sky would some time or other fall down upon them. These men also he sent back, calling them friends, and ranking them as allies, making the remark that the Celts were braggarts.[49]
He then advanced into the land of the Agrianians and Paeonians,[50] where messengers reached him, who reported that Clitus, son of Bardylis,[51] had revolted, and that Glaucias,[52] king of the Taulantians,[53] had gone over to him. They also reported that the Autariatians[54] intended to attack him on his way. He accordingly resolved to commence his march without delay. But Langarus, king of the Agrianians, who, in the lifetime of Philip, had been an open and avowed friend of Alexander, and had gone on an embassy to him in his private capacity, at that time also came to him with the finest and best armed of the shield-bearing troops, which he kept as a body-guard. When this man heard that Alexander was inquiring who the Autariatians were, and what was the number of their men, he said that he need take no account of them, since they were the least warlike of the tribes of that district; and that he would himself make an inroad into their land, so that they might have too much occupation about their own affairs to attack others. Accordingly, at Alexander’s order, he made an attack upon them; and not only did he attack them, but he swept their land clean of captives and booty. Thus the Autariatians were indeed occupied with their own affairs. Langarus was rewarded by Alexander with the greatest honours, and received from him the gifts which were considered most valuable in the eyes of the king of the Macedonians. Alexander also promised to give him his sister Cyna[55] in marriage when he arrived at Pella.[56] But Langarus fell ill and died on his return home.