Menelaüs called upon the chieftains of Greece to aid him in recovering his wife. They came forward with a few exceptions. Ulysses, for instance, who had married a cousin of Helen's, Penelope, daughter of Icarius, was happy in his wife and child, and loth to embark in the troublesome affair. Palamedes was sent to urge him. But when Palamedes arrived at Ithaca, Ulysses pretended madness. He yoked an ass and an ox together to the plow and began to sow salt. The ambassador, to try him, placed the infant Telemachus before the plow, whereupon the father, turning the plow aside, showed that his insanity was a mere pretense. Being himself gained for the undertaking, Ulysses lent his aid to bring in other reluctant chiefs, especially Achilles, son of Peleus and Thetis. Thetis being herself one of the immortals, and knowing that her son was fated to perish before Troy if he went on the expedition, endeavored to prevent his going. She, accordingly, sent him to the court of King Lycomedes of the island of Scyros, and induced him to conceal himself in the garb of a maiden among the daughters of the king. Hearing that the young Achilles was there, Ulysses went disguised as a merchant to the palace and offered for sale female ornaments, among which had been placed some arms. Forgetting the part he had assumed, Achilles handled the weapons and thereby betrayed himself to Ulysses, who found no great difficulty in persuading him to disregard his mother's counsels and join his countrymen in the war. It seems that from early youth Paris had been reared in obscurity, because there were forebodings that he would be the ruin of the state. These forebodings appeared, at last, likely to be realized; for the Grecian armament now in preparation was the greatest that had ever been fitted out. Agamemnon, king of Mycenæ and brother of Menelaüs, was chosen commander in chief. Preëminent among the warriors was the swift-footed Achilles. After him ranked his cousin Ajax, the son of Telamon, gigantic in size and of great courage, but dull of intellect; Diomede, the son of Tydeus, second only to Achilles in all the qualities of a hero; Ulysses, famous for sagacity; and Nestor, the oldest of the Grecian chiefs, to whom they all looked up for counsel.