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
vīlĭpendo: ĕre, v. a. vilis-pendo,
I to hold in slight esteem, to depreciate, despise, vilipend: aliquem, Plaut. Truc. 2, 6, 58.
vilipendo vilipendere, -, - V :: despise, slight