(22) ἐπεὶ δὲ περὶ ἕκαστον μὲν γένος τῶν λόγων ἕτερον ἦν τὸ (23) τέλος,
περὶ ἁπάντων δ’ αὐτῶν εἰλημμέναι δόξαι καὶ προτά(24)σεις εἰσὶν ἐξ ὧν τὰς πίστεις φέρουσιν καὶ συμβουλεύοντες καὶ (25) ἐπιδεικνύμενοι καὶ ἀμφισβητοῦντες,
ἔτι δὲ ἐξ ὧν ἠθικοὺς (26) τοὺς λόγους ἐνδέχεται ποιεῖν, καὶ περὶ τούτων διώρισται,
(27) λοιπὸν ἡμῖν διελθεῖν περὶ τῶν κοινῶν.
Each of the main divisions of oratory has, we have seen, its own distinct purpose.
With regard to each division, we have noted the accepted views and propositions upon which we may base our arguments—for political, for ceremonial, and for forensic speaking.
We have further determined completely by what means speeches may be invested with the required moral character.
We are now to proceed to discuss the arguments common to all oratory.