Sophocles, Fr. 735 (Athenaeus, Deipnosophists 10, 428 A)

 

“Drinking under compulsion is an evil equal to thirst”

τὸ πρὸς βίαν / πίνειν ἴσον πέφυκε τῷ διψῆν κακόν

(Yes, I had a problem with the extant article τῷ. It is an articular infinitive!)

Euenus (Aristotle, Metaphysics 4.5.1015a28)

“Any act of compulsion hurts”

πᾶν γὰρ ἀναγκαῖον πρῆγμ᾿ ἀνιηρὸν ἔφυ

The full text

Euenus has appeared here before