§154.1Fr. 154
Οὐ μὴν οὐδὲ μετʼ ὀργῆς πρακτέον τοῖς φρονίμοις οὐδέν· ἀλόγιστος γὰρ θυμὸς καὶ μετὰ προνοίας οὐδὲν ἄν ποτε ποιήσειεν ἀλλὰ μεθύων ταῖς φιλονεικίαις ὡς ἔτυχε χρῆται ταῖς ὁρμαῖς·
Furthermore, the wise must do nothing with anger; for thoughtless anger would never accomplish anything even with foresight, but, drunk with rivalry, follows its impulses haphazardly.
ὥστε δεῖ μήτε ἐξ ὑπογυίου τῶν ἁμαρτημάτων τὰς τιμωρίας μήτε παρὰ τῶν οἰκετῶν μήτε παρὰ τῶν ἄλλων λαμβάνειν ἵνα τὸ τῷ λογισμῷ κράτιστον μὴ τὸ τῷ θυμῷ φίλον ἀεὶ πράτης·
Therefore, one must not exact punishment immediately after transgressions, neither from household servants nor from others, so that you may always do what is best for reason, not what is pleasing to anger.
καὶ δίκην παρὰ τῶν ἐχθρῶν μὴ λαμβάνῃς ἐξ ἧς μέλλεις σαυτὸν μὴ αὐτοὺς ἐκείνους βλάψειν.
And do not exact penalty from your enemies, from which you are going to harm yourself and not those very men.
Τὸ γὰρ τιμωρεῖσθαί τινα κακῶς ἑαυτὸν ποιοῦντα δίκην διδόναι οὐχ ἧττον ἢ λαμβάνειν ἐστίν.
For to punish someone while doing harm to oneself is no less to suffer punishment than to inflict it.
Ὥστε δεῖ σχολῇ μᾶλλον ἀμύνεσθαι ζητεῖν ἢ ταχέως καὶ ἀλυσιτελῶς ἑαυτῷ κολάσαι τὸν ἐχθρόν.
Therefore, one should seek to defend oneself with deliberation rather than to chastise the enemy quickly and disadvantageously to oneself.