When, about 560 [BC], Croesus began to subject to Lydian rule the Greek coast of Asia from Cnidus to the Hellespont, Miletus saved its independence by refusing to help her sister states. But in 546 Cyrus conquered Lydia, and without much difficulty absorbed the faction-torn cities of Ionia into the Persian Empire. The great age of Miletus was over. Science and philosophy, in the history of states, reach their height after decadence has set in; wisdom is a harbinger of death.