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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.
Russian > Greek
δειλία, δειλίη, κάκη, κακοψυχία, μικροψυχία, ἀνανδρία, ἀνανδρηΐη, κακανδρία, ἀποδειλίασις, ἀψυχία, κακότης, ταπείνωσις, κακια, ἀθυμία