The pen is mightier than the sword.
Persuasion and writing accomplish more in the long run than force.
What They Mean
Arguments outlast armies. A well-kept record defeats a well-armed opponent, given sufficient time.
Are They Right?
In the long run, frequently. In the short run, the sword has an excellent record and the pen should not be brought to the meeting.
What They Left Out
The pen is at its mightiest when someone else is holding the sword.