This hardy race of soldiers, that could rush into battle, almost without rations, was a terror to the pampered Lydian and the luxurious Babylonian, for the ideal life of the Persian was continual conquest, even his symbol of Ormazd being a winged warrior with bow and threatening hand. But when the contest was over, the conquerors irrigated the plains of Babylonia so faithfully that they were able to gather three harvests a year from the fertile soil. The roads of the kingdom were supplied with post-stations, and constantly traversed by government couriers, while a great commercial intercourse was carried even to the shores of Greece. It was not an enervated people that laid the wonderful masonry in the foundations of Persepolis, and reared the marble columns that still mock the changes of more than two thousand years. But luxury crept in with continued power, and after a time, it was said that the royal table was daily spread for fifteen thousand guests, even though the king dined alone. Their nobles were clothed in purple and decorated with jewels, while the person of the king was resplendent with diamonds and rubies. In the royal treasury pearls were piled up like the sands of the sea, and diamonds glittered amidst masses of amethyst and sapphire. The royal helmet and buckler flashed with the green light of emeralds and the crimson fire of the ruby. But still they retained traces of the primitive simplicity which belonged to the early mountain tribes, and the constructive energy of their kings went on, building and planning, and forcing into their courts the splendors of rifled cities. Darius flung the floating bridge across the Bosphorus, that afterward furnished a highway for Alexander; their summer palaces rose upon the mountains of Media, while their winter homes, with marble pillars and graceful colonnades, were placed in sunny vales where fountains gleamed through the glossy leaves and the nightingale built her nest among thickets of roses. It is said of Artaxerxes that even while he wore upon his person jewels to the value of thousands of talents, he would still lead his army on foot through mountain passes, carrying his own quiver and shield, and forcing his way up the most rugged heights.