εἰς πέλαγος σπέρµα βαλεῖν καὶ γράµµατα γράψαι ἀµφότερος µόχθος τε κενὸς καὶ πρᾶξις ἄκαρπος → throwing seeds and writing letters at sea are both a vain and fruitless endeavor
subs.
P. and V. δαίμων, ὁ, P. δαιμόνιον, τό.
Evil spirit: P. and V. κακὸς δαίμων, ὁ.
Be possessed by a demon, v.: P. and V. δαιμονᾶν (Xen.), ἐνθουσιᾶν, P. ἐνθουσιάζειν (Plat.).
The demon of revenge, subs.: use V. Ἐρινύς, ἡ.