παίδευσις
Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
English (LSJ)
εως, ἡ,
A process or system of education (παιδείας παράδοσις Pl.Def.416a), Hdt.4.78, 6.128, Ar.Nu.986, 1043; τροφὴ καὶ π. Pl.Criti.110c, R.424a; ξενικὴν π. παιδεύειν Id.Hp.Ma.284c; τὴν ὑπ' ἀρετῆς Ἡρακλέους π. his education by virtue, X.Mem.2.1.34; (Ἕλληνας καλεῖσθαι τοὺς τῆς π. τῆς ἡμετέρας μετέχοντας Isoc.4.50, cf. 3.57; ἡ περὶ τοὺς λόγους π. instruction in rhetoric, Id.11.49: in pl., τροφαὶ καὶ -σεις Pl.Lg. 926e. 2 its result, culture, learning. Ar.Th.175, Antipho Soph. 60, Isoc.9.78, Pl.Prt.349a, Arist.Rh.1399a13. 3 instructing, coaching, priming of witnesses, ἐκ παιδεύσεως, v.l. for ἐκ παρασκευῆς in D.34.48. II means of educating, τὴν πόλιν πᾶσαν τῆς Ἑλλάδος παίδευσιν εἶναι is the school of Greece, Th.2.41. III in late Gr., ἡ σὴ, ἡ ὑμετέρα π., form of address to members of the learned professions, Stud.Pal.20.129.13 (v A. D.), POxy.1165.2 (vi A. D.), etc.