Green tells the story:
Piqued and curious, Alexander eventually went out to the suburb where Diogenes lived, in his large clay tub, and approached him personally. He found the philosopher sunning himself, naked except for a loincloth. Diogenes, his meditations disturbed by the noise and laughter of the numerous courtiers who came flocking at the captain-general’s heels, looked up at Alexander with a direct, uncomfortable gaze, but said nothing.
For once in his life, Alexander was somewhat embarrassed. He greeted Diogenes with elaborate formality, and waited. Diogenes remained silent. At last, in desperation, Alexander asked if there was anything the philosopher wanted, anything he, Alexander, could do for him? “Yes,” came the famous answer, “stand aside; you’re keeping the sun off me.” That was the end of the interview…. Alexander’s followers tried to turn the episode into a joke, jeering at Diogenes and belittling his pretensions. But the captain-general silenced them with one enigmatic remark. “If I were not Alexander,” he said, “I would be Diogenes.” 3
Diogenes wanted nothing to do with the world; Alexander wanted to conquer it. The two men died on the same day: Alexander at thirty-three, Diogenes at ninety.
That winter of 336–35 BC was spent in preparations for the Asian war, but Alexander knew that he had to have peace at home before he could safely go abroad. He needed the financial support of Greece until he was able to secure the immense treasure of Darius. One characteristic that made Alexander an outstanding commander was his ability to “read” his enemy’s mind. He demonstrated this in several battles, in Thrace, against the Triballians (nomadic people who opposed him on the shores of the Danube), and against the Illyrians.
In the case of the Triballians, he sent his archers and slingers out, apparently alone, and kept his phalanx and cavalry under cover. The Triballians came out, thinking they were opposed only by arrows and rocks. Alexander brought his superior force from hiding and cut down 3,000 natives in one charge. Very shortly the remaining Triballians came out of hiding and wanted peace and alliances with such a great warrior.
Against the Illyrians, Alexander miscalculated and found his army cut off from his supplies and relief column. According to Green:
The young king extricated himself [in] one of the most eccentrically brilliant stratagems in the whole history of warfare. Early next morning he formed up his entire army in the plain—apparently oblivious to the presence of the enemy—and proceeded to give an exhibition of close-order drill. The phalanx was paraded in files 120 men deep, with a squadron of 200 cavalry on either flank. By Alexander’s express command, these drill-maneuvers were carried out in total silence. At given signals the great forest of sarissas would rise to the vertical salute position, and then dip horizontally as for battle-order. The bristling spear-line swung now right, now left, in perfect unison. The phalanx advanced, wheeled into column and line, moved through various intricate formations as though on the parade-ground—all without a word being uttered.
The barbarians had never seen anything like it. From their positions in the surrounding hills they stared down at this weird ritual, scarcely able to believe their eyes. Then, little by little, one straggling group after another began to edge closer, half-terrified, half-enthralled. Alexander watched them, waiting for the psychological moment. Then, at last, he gave his final pre-arranged signal. The left wing of the cavalry…charged…. Every man of the phalanx beat his spear on his shield, and from thousands of throats there went up the terrible ululating Macedonian war-cry— “Alalalalai!” —echoing and reverberating from the mountains. This sudden, shattering explosion of sound, especially after the dead stillness which had preceded it, completely unnerved [the] tribesmen,