9. At the close of the book Eratosthenes blames the system of those who would divide all mankind into Greeks and Barbarians, and likewise those who recommended Alexander to treat the Greeks as friends, but the Barbarians as enemies.[472] He suggests, as a better course, to distinguish them according to their virtues and their vices, “since amongst the Greeks there are many worthless characters, and many highly civilized are to be found amongst the Barbarians; witness the Indians and Ariani,[473] or still better the Romans and Carthaginians, whose political system is so beautifully perfect. Alexander, considering this, disregarded the advice which had been offered him, and patronized without distinction any man he considered to be deserving.” But we would inquire whether those men who thus divided the human race, abandoning one portion to contempt, and exalting to dignity the other, were not actuated to this because they found that on one side justice, knowledge, and the force of reason reigned supreme, but their contraries on the other. Alexander did not disregard the advice tendered him, but gladly embraced and followed it, respecting the wisdom of those who gave it; and so far from taking the opposite course, he closely pursued that which they pointed out. BOOK II. SUMMARY. In the Second Book, having proposed for discussion the [opinions] of Eratosthenes, he examines and refutes whatever that writer may have incorrectly said, determined, or laid down. He likewise brings forward many statements of Hipparchus, which he disproves, and finishes with a short exposition or synopsis of the whole subject, namely, geographical knowledge. CHAPTER I. 1. In the Third Book of his Geography Eratosthenes furnishes us with a chart of the habitable earth. This he divides into two portions, by a line running from east to west parallel to the equator. He makes the Pillars of Hercules the boundary of this line to the west, and to the east the farthest ridges of those mountains which bound India on the north. From the Pillars he draws the line through the Strait of Sicily,[474] and the southern extremities of Peloponnesus and Attica, to Rhodes and the Gulf of Issus.[475] He says, “Through the whole of this distance the line mentioned is drawn across the sea[476] and adjacent continents; the whole length of the Mediterranean as far as Cilicia extending in that direction. Thence it runs nearly in a straight line along the whole chain of the Taurus to India. The Taurus continuing in a straight line from the Pillars divides Asia through its whole length into two halves, north and south. So that both the Taurus and the sea from the Pillars hither[477] lie under the parallel of Athens.”