ἀνάγκᾳ δ' οὐδὲ θεοὶ μάχονται → but not even gods fight necessity (Simonides, fr. 37.1.29)
P. and V. θυρωρός, ὁ or ἡ (Plato), φύλαξ, ὁ or ἡ, V. πυλωρός, ὁ or ἡ, παραστάτης πυλῶν, ὁ (Euripides, Rhesus).