In forty-eight years of rule he had won all his wars and battles except one; had extended his empire on every side; had made Persia stronger than ever since Darius I; and had given it so competent a system of administration that when the Arabs conquered Persia they adopted that system practically without change. Almost contemporary with Justinian, he was rated by the common consent of their contemporaries as the greater king; and the Persians of every later generation counted him the strongest and ablest monarch in their history.
