Lepta
From LSJ
ἔνδον σκάπτε, ἔνδον ἡ πηγὴ τοῦ ἀγαθοῦ καὶ ἀεὶ ἀναβλύειν δυναμένη, ἐὰν ἀεὶ σκάπτῃς → Dig within. Within is the wellspring of Good; and it is always ready to bubble up, if you just dig | Look within. Within is the fountain of the good, and it will ever bubble up, if thou wilt ever dig.
Latin > English (Lewis & Short)
Lepta: ae, m. λεπτός>, weak,
I a Roman surname: Q. Lepta, praefectus fabrūm, Cic. Fam. 3, 7, 4; cf. id. ib. 5, 20, 4. To him are addressed the letters, Cic. Fam. 6, 18 and 19.