Diogenes Laertius, book II Anaximenes
5. "You were better advised than the rest of us when you left Samos for Croton, where you live in peace. For the sons of Aeaces work incessant mischief, and Miletus is never without tyrants. The king of the Medes is another terror to us, not indeed so long as we are willing to pay tribute; but the Ionians are on the point of going to war with the Medes to secure their common freedom, and once we are at war we have no more hope of safety. How then can Anaximenes any longer think of studying the heavens when threatened with destruction or slavery? Meanwhile you find favour with the people of Croton and with the other Greeks in Italy; and pupils come to you even from Sicily."