[6] Thucyd. v, 23. The treaty of alliance seems to have been drawn up at Sparta, and approved or concerted with the Athenian envoys; then sent to Athens, and there adopted by the people; then sworn to on both sides. The interval between this second treaty and the first (οὐ πολλῷ ὕστερον, v, 24), may have been more than a month; for it comprised the visit of the Lacedæmonian envoys to Amphipolis and the other towns of Thrace, the manifestation of resistance in those towns, and the return of Klearidas to Sparta to give an account of his conduct. The most important result of this new alliance was something not specified in its provisions, but understood, we may be well assured, between the Spartan ephors and Nikias at the time when it was concluded. All the Spartan captives at Athens were forthwith restored.[7] [7] Thucyd. v, 24. Nothing can demonstrate more powerfully the pacific and acquiescent feeling now reigning at Athens, as well as the strong philo-Laconian inclinations of her leading men (at this moment Alkibiadês was competing with Nikias for the favor of Sparta, as will be stated presently), than the terms of this alliance, which bound Athens to assist in keeping down the Helots, and the still more important after-proceeding, of restoring the Spartan captives. Athens thus parted irrevocably with her best card, and promised to renounce her second best, without obtaining the smallest equivalent beyond what was contained in the oath of Sparta to become her ally. For the last three years and a half, ever since the capture of Sphakteria, the possession of these captives had placed her in a position of decided advantage in regard to her chief enemy; advantage, however, which had to a certain extent been countervailed by subsequent losses. This state of things was fairly enough represented by the treaty of peace deliberately discussed during the winter, and sworn to at the commencement of spring, whereby a string of concessions, reciprocal and balancing, had been imposed on both parties. Moreover, Athens had been lucky enough in drawing lots to find herself enabled to wait for the actual fulfilment of such concessions by the Spartans, before she consummated her own. Now the Spartans had not as yet realized any one of their promised concessions: nay, more; in trying to do so, they had displayed such a want either of power or of will, as made it plain, that nothing short of the most stringent necessity would convert their promises into realities. Yet, under these marked indications, Nikias persuades his countrymen to conclude a second treaty which practically annuls the first, and which insures to the Spartans gratuitously all the main benefits of the first, with little or none of the correlative sacrifices. The alliance of Sparta could hardly be said to count as a consideration: for that alliance was at this moment, under the uncertain relations with Argos, not less valuable to Sparta herself than to Athens.