τὸ λακωνίζειν πολὺ μᾶλλόν ἐστιν φιλοσοφεῖν ἢ φιλογυμναστεῖν → to behave like a Lacedaemonian is much more to love wisdom than to love gymnastics (Plato, Protagoras 342e6)
ἀλήθεια, τὸ ἁπλοῦν, ἀληθοσύνη, ἀληθότης, ἀλήθευμα, ἀληθής