The pen is mightier
The sword is mightier
Hitler was a great public speaker and had a clever plan to take control of Germany and most of Europe, and he killed 7 million people. Hitler probably planned a lot of that on paper, you can't do that with a sword now can you?
I've seen enough Death Note to see where this is going.
Pens brought down more nations and armies with a single letter than a sword. Plus a pen can write stuff and stab stuff :D.
The pen may spur men to use their swords or lay them down, but it's still the sword that matters. An idea may be wonderful and/or terrible, but it's just an idea, what's more important is the actions that idea has influenced.