Alexander the Great is the most renowned historical figure in Europe. Just look at how many cities named Alexandria are on the world map, and you will immediately grasp the extent of Alexander's might and realize how many lands his vast army once conquered. Starting from the mountainous kingdom of Macedon in northern Greece, he first seized Greece, then invaded Asia, occupied Egypt, advanced deep into Persia, captured the so-called "King of Kings," the Persian Emperor, alive, and finally crossed the Hindu Kush mountains, pushing all the way to the Indus River valley. He established an unprecedentedly vast empire across vast territories, stretching from Greece and Macedon in the west to the Indus River valley in the east, from the First Cataract of the Nile River in the south to the Jaxartes River in the north, with its capital in Babylon. Alexander the Great's achievements have had a deeper impact on the development of Western civilization than any other European in history. Napoleon once evaluated him: "Alexander is the greatest military genius in history." Caesar said: "Alexander, under the age of thirty, had already pacified Greece, marched into the interior of Asia and Africa, subdued nearly a hundred states, captured tens of thousands of cities, and founded a vast empire spanning Europe, Asia, and Africa, truly deserving the title of 'King of the World.'" Then, one cannot help but ask: What exactly made Alexander himself so exceptionally outstanding?