Persuasion we used in arranging that Hellenotamiae should be appointed at Athens to control the joint funds, According to Thucydides ( Thuc. 1.96 ) the Hellenotamiae were Athenian officials from the very start. But the evidence of the Quota-lists rather indicates that the office first became purely Athenian in 454, after the transference of the treasury of the League from Delos to Athens . that the allied fleet should assemble in our own harbor, and that such states as possessed no ships should be supplied with them by us: stealth in building our walls unknown to the Peloponnesians Apparently a reference to the famous trick of Themistocles when rebuilding the walls of Athens in the winter of 479 ( Thuc. 1.90 ). Thucydides, however, does not suggest that there was any danger of war from Sparta in consequence. : bribery in purchasing Sparta ’s acquiescence: and force in crushing our enemies; thus it was that we built up an empire over the whole nation. All these successes were achieved in eighty-five years. i.e. between 490 and 405, Marathon and Aegospotami .