There were salt-works in Sardinia too as early as about 150 B.C., as is attested by an inscription assigned to this date in Latin, Greek and Punic, being a dedication by one Cleon salari(us) soc(iorum) s(ervus) (Corp. Inscr.
Of these the best known were: the Kolakes, in which he pilloried the spendthrift Callias, who wasted his substance on sophists and parasites; Maricas, an attack on Hyperbolus, the successor of Cleon, under a fictitious name; the Baptae, against Alcibiades and his clubs, at which profligate foreign rites were practised.
In 422 B.C. Cleon led an unsuccessful expedition to recover it, in which both he and Brasidas were slain.
An assembly was held and under the invective of Cleon it was decided to kill.
The final success of Brasidas at Amphipolis, where both he and Cleon were killed, paved the way for a more permanent agreement, the peace parties at Athens and Sparta being in the ascendant.
(a) Though Cleon was probably wise in opposing peace negotiations before the capture of the Spartans in Sphacteria, it seems in the light of subsequent events that he was wrong to refuse the terms which were offered after the hoplites had been captured.
Possibly, too, Cleon foresaw that peace would have meant a triumph for the philo-Laconian party.
A truce was concluded, but peace negotiations were defeated by Cleon, who was himself appointed to conduct operations with Demosthenes.
Athens must never again seek "empire" in the sense which became odious under the influence of Cleon and Hyperbolus, - when, to use the image of Aristophanes, the allies were as Babylonian slaves grinding in the Athenian mill.