Passage 7.6.8
τοῦτο μὲν δὴ Πελοποννησίων ἦν τότε ἁπάντων βούλευμα· ἐπεὶ δὲ Γαλάται ναυσὶν ὅντινα δὴ τρόπον διαβεβήκεσαν ἐς τὴν Ἀσίαν, ἐνταῦθα εἶχεν οὕτω τὰ Ἑλλήνων. προεστήκεσαν κατʼ ἰσχὺν οὐδένες ἔτι τοῦ Ἑλληνικοῦ· Λακεδαιμονίους μὲν γὰρ τὸ ἐν Λεύκτροις πταῖσμα καὶ ἅμα οἵ τε Ἀρκάδες συνεληλυθότες ἐς Μεγάλην πόλιν καὶ οἱ Μεσσήνιοι παροικοῦντες ἀνασώσασθαι τὴν προτέραν ἔτι εὐδαιμονίαν ἐκώλυον·
Such was indeed at that time the common resolution of all the Peloponnesians. But after the Gauls had somehow crossed by ship into Asia, the situation among the Greeks stood thus: None of the Greek states any longer maintained its former strength. For the Spartans were hindered from recovering their previous prosperity by the disaster at Leuctra, as well as by the Arcadians who had united in a single great city and by the Messenians dwelling as their neighbors.