Thucydides, History of the Peloponnesian War
Benjamin Jowett, Ed.

17. Chalcideus and Alcibiades, when they had chased Strombichides to Samos, gave heavy¹ arms to the crews of the ships which they had brought from Peloponnesus, and left them in Chios. [2] Then, having manned their own vessels and twenty others with Chians, they sailed to Miletus, intending to raise a revolt.—For Alcibiades, who was on friendly terms with the principal Milesians, wanted to gain over the place before any more ships from Peloponnesus arrived, and, using the Chian troops and those of Chalcideus only, to spread revolt far and wide among the cities of Ionia. Thus he would gain the chief glory of the war for the Chians, for himself, for Chalcideus; [3] and, in fulfilment of his promise², for Endius, who had sent him out.—They were not observed during the greater part of their voyage, and, although narrowly escaping from Strombichides, and from Thrasycles who had just arrived with twelve ships from Athens and had joined Strombichides in the pursuit, they succeeded in raising a revolt in Miletus. The Athenians followed close behind them with nineteen ships, but the Milesians would not receive them, and they came to anchor at Ladè, the island opposite the town. [4] Immediately after the revolt of Miletus the Lacedaemonians made their first alliance with the King of Persia, which was negotiated by Tissaphernes and Chalcideus. It ran as follows: