Εἰ γὰρ καὶ το ἀληθὲς λέγοιεν, οὐδ᾽ οὕτω συμφωνοίη ἂν αὐτοῖς ὁ τῆς ἀληθείας ἐραστήςTselikas is right with regards to the missing accent on το.
Εἰ γὰρ καὶ τὸ ἀληθὲς λέγοιεν, οὐδ᾽ οὕτω συμφωνοίη ἂν αὐτοῖς ὁ τῆς ἀληθείας ἐραστής.
"For even if they were to speak the truth, the lover of truth would not agree with them so much."