Whether there is any historical basis for this story of the ring may be questioned. But this we do know, that the friendship between Amasis and Polycrates was broken, and that Polycrates offered to help Cambyses in his invasion, and sent forty ships to the Nile for this purpose. On these were some Samians whom the tyrant wished to get rid of, and whom he secretly asked the Persian king not to let return. These exiles, however, suspecting what was in store for them, managed in some way to escape, and returned to Samos, where they made an attack on Polycrates. Being driven off by him, they went to Sparta and asked for assistance, telling so long a story of their misfortunes and sufferings that the Spartans, who could not bear long speeches, curtly answered, "We have forgotten the first part of your speech, and the last part we do not understand." This answer taught the Samians a lesson. The next day they met the Spartans with an empty wallet, saying, "Our wallet has no meal in it." "Your wallet is superfluous," said the Spartans; meaning that the words would have served without it. The aid which the Spartans thereupon granted the exiles proved of no effect, for it was against Polycrates, the fortunate. They sent an expedition to Samos, and besieged the city forty days, but were forced to retire without success. Then the exiles, thus made homeless, became pirates. They attacked the weak but rich island of Siphnos, which they ravaged, and forced the inhabitants to buy them off at a cost of one hundred talents. With this fund they purchased the island of Hydrea, but in the end went to Crete, where they captured the city of Cydonia. After they had held this city for five years the Cretans recaptured it, and the Samian exiles ended their career by being sold into slavery. Meanwhile the good fortune of Polycrates continued, and Samos flourished under his rule. In addition to his great buildings and works of engineering he became interested in stock-raising, and introduced into the island the finest breeds of sheep, goats, and pigs. By high wages he attracted the ablest artisans of Greece to the city, and added to his popularity by lending his rich hangings and costly plate to those who wanted them for a wedding feast or a sumptuous banquet. And that none of his subjects might betray him while he was off upon an extended expedition, he had the wives and children of all whom he suspected shut up in the sheds built to shelter his ships, with orders that these should be burned in case of any rebellious outbreak.