"There is only one way to defeat the enemy, and that is to write as well as one can."
Saul Bellow Jewish-American author, who won the Nobel Prize. Jewish Virtual Library
This quote can cover lots of territory. Out of context, we don't know who the enemy is.
Who? Our critics, reviewers with a tendency toward sadistic literary knife twisting? Definitely, superior writing will put them in their place.
This cartoon is a good example of writing well. The point is made through sarcasm. Words count, but must be written with care to actually express an idea.
So the enemy might be a good person with a concept that does not glorify God. A bludgeon does nothing to change one's opinion, but carefully crafted words can. It behooves us to write well when we wish to influence our readers to ponder the things of God.