All that we can make out, amidst these uncertified allegations, is that, in a year or two immediately preceding the Peloponnesian War, Pericles was hard pressed by the accusations of political enemies—perhaps even in his own person, but certainly in the persons of those who were most in his confidence and affection. And it was in this turn of his political position, that the Lacedæmonians sent to Athens the above-mentioned requisition, that the ancient Cylonian sacrilege might be at length cleared out; in other words, that Pericles and his family might be banished. Doubtless his enemies, as well as the partisans of Lacedæmon at Athens, would strenuously support this proposition. And the party of Lacedæmon at Athens was always strong, even during the middle of the war; to act as proxenus to the Lacedæmonians was accounted an honour even by the greatest Athenian families. On this occasion, however, the manœuvre did not succeed, nor did the Athenians listen to the requisition for banishing the sacrilegious Alcmæonids. On the contrary, they replied that the Spartans too had an account of sacrilege to clear off: for they had violated the sanctuary of Poseidon at Cape Tænarus, in dragging from it some helot suppliants; and the sanctuary of Athene Chalciœcus at Sparta, in blocking up and starving to death the guilty regent Pausanias. To require that Laconia might be cleared of these two acts of sacrilege, was the only answer which the Athenians made to the demand sent for the banishment of Pericles. Probably the actual effect of that demand was to strengthen him in the public esteem—very different from the effect of the same manœuvre when practised before by Cleomenes against Clisthenes.
Other Spartan envoys shortly afterwards arrived with fresh demands. The Athenians were now required: (1) to withdraw their troops from Potidæa; (2) to replace Ægina in its autonomy; (3) to repeal the bill of exclusion against the Megarians.
It was upon the latter that the greatest stress was laid; an intimation being held out that the war might be avoided if such repeal were granted. We see plainly from this proceeding that the Lacedæmonians acted in concert with the anti-Periclean leaders at Athens. To Sparta and her confederacy the decree against the Megarians was of less importance than the rescue of the Corinthian troops now blocked up in Potidæa; but on the other hand, the party opposed to Pericles would have much better chance of getting a vote of the assembly against him on the subject of the Megarians: and this advantage, if gained, would serve to enfeeble his influence generally. No concession was obtained however on either of the three points: even in respect to Megara, the decree of exclusion was vindicated and upheld against all the force of opposition. At length the Lacedæmonians—who had already resolved upon war and had sent three envoys in mere compliance with the exigencies of ordinary practice, not with any idea of bringing about an accommodation—sent a third batch of envoys with a proposition which at least had the merit of disclosing their real purpose without disguise. Rhamphias and two other Spartans announced to the Athenians the simple injunction: “The Lacedæmonians wish the peace to stand; and it may stand, if you will leave the Greeks autonomous.” Upon this demand, so very different from the preceding, the Athenians resolved to hold a fresh assembly on the subject of war or peace, to open the whole question anew for discussion, and to determine once for all on a peremptory answer.
The last demands presented on the part of Sparta, which went to nothing less than the entire extinction of the Athenian empire—combined with the character, alike wavering and insincere, of the demands previously made, and with the knowledge that the Spartan confederacy had pronounced peremptorily in favour of war—seemed likely to produce unanimity at Athens, and to bring together this important assembly under the universal conviction that war was inevitable. Such however was not the fact.
The reluctance to go to war was sincere amidst the majority of the assembly, while among a considerable portion of them it was so preponderant, that they even now reverted to the opening which the Lacedæmonians had before held out about the anti-Megarian decree, as if that were the chief cause of the war. There was much difference of opinion among the speakers, several of whom insisted upon the repeal of this decree, treating it as a matter far too insignificant to go to war about, and denouncing the obstinacy of Pericles for refusing to concede such a trifle. Against this opinion Pericles entered his protest, in an harangue decisive and encouraging, which Dionysius of Halicarnassus ranks among the best speeches in Thucydides: the latter historian may probably himself have heard the original speech.