The Persians teach their boys, beginning from five years to twenty, three things only: to hunt, to shoot, and to speak truth.

παιδεύουσι δὲ τοὺς παῖδας ἀπὸ πενταέτεος ἀρξάμενοι μέχρι εἰκοσαέτεος τρία μοῦνα, ἰχνεύειν καὶ τοξεύειν καὶ ἀληθίζεσθαι.

Herodotus 1.136