Motto

Horace, Satires 1.4.117 (my translation):

To preserve the way of life passed down by men of old.

traditum ab antiquis morem servare.

Cf. Polybius 15.4.11 (on Scipio Africanus; tr. Ian Scott-Kilvert):

[He] set himself to uphold 'the noble traditions of our fathers', as the saying is.

ἐπειράθη διαφυλάξαι κατὰ τὴν παροιμίαν "πατέρων εὖ κείμενα ἔργα."