Plutarch's Platonic questions (10.7)

And prepositions are like to the crests of a helmet, or footstools and pedestals, which (one may rather say) do belong to words than are words themselves. See whether they rather be not pieces and scraps of words, as they that are in haste write but dashes and pricks for letters. For it is plain that ἐμβῆναι and ἐκβῆναι are abbreviations of the whole words ἐντὸς βῆναι and ἐκτὸς βῆναι, προγενέσθαι for πρότερον γενέσθαι, and καθίζειν for κάτω ἵζειν. As undoubtedly for haste and brevity’s sake, instead of λίθους βάλλειν and τοίχους ὀρύττειν men first said λιθοβολεῖν and τοιχωρυζεῖν.