ἐν τῷ θέρει τὴν χλαῖναν κατατρίβων → wearing out one's cloak in summertime
obstinacy: P. αὐθάδεια, ἡ, Ar. and V. αὐθαδία, ἡ.
harshness: P. σκληρότης, ἡ.
firmness: P. καρτερία, ἡ.
