A quotation from Marcus Aurelius
We were born for cooperation, like feet, like hands, like eyelids, like the rows of upper and lower teeth. So to work against each other is contrary to nature; and resentment and rejection count as working against someone.
[γεγόναμεν γὰρ πρὸς συνεργίαν ὡς πόδες, ὡς χεῖρες, ὡς βλέφαρα, ὡς οἱ στοῖχοι τῶν ἄνω καὶ κάτω ὀδόντων. τὸ οὖν ἀντιπράσσειν ἀλλήλοις παρὰ φύσιν: ἀντιπρακτικὸν δὲ τὸ ἀγανακτεῖν καὶ ἀποστρέφεσθαι.]
Marcus Aurelius (AD 121-180) Roman emperor (161-180), Stoic philosopher
Meditations [To Himself; Τὰ εἰς ἑαυτόν], Book 2, ch. 1 (2.1) [tr. Gill (2013)]
Sourcing, notes, alternate translations: wist.info/marcus-aureleus/7491…