Beneath the rule of men entirely great
The pen is mightier than the sword. Behold
The arch-enchanter’s wand! — itself a nothing! —
But taking sorcery from the master-hand
To paralyze the Caesars — and to strike
The loud earth breathless! — Take away the sword —
States can be saved without it!

Edward George Bulwer-Lytton (1803-1873) English novelist and politician

Richelieu, Act 2, sc. 2 [Richelieu] (1839)
    (Source)

See Shakespeare.