εἰ δὲ μὴ ἀγὼν, οὐδὲ νίκη· εἰ δὲ μὴ νίκη, οὐδὲ στέφανοι.

“And if there is no struggle, there is no victory; and if no victory, there are no crowns.”

Leontius of Byzantium, Contra Aphthartodocetas PG 1349d, Daley 380.24–5.