John Lord, Ancient States and Empires
“ The booty acquired was immense, in gold, silver, and captives. Important consequences of the battle. Such was the decisive battle of Issus, where the cowardice and incompetency of Darius were more marked than the generalship of Alexander himself. No victory was ever followed by more important consequences. It dispersed the Persian hosts, and opened Persia to a victorious enemy, and gave an irresistible prestige to the conqueror. The fall of the empire was rendered probable, and insured successive triumphs to Alexander. ”
