I guess a good way to put it would be to write succinctly. If you can make your point in 27 words, or in 5 paragraphs - the 27 words is better. As a professional writer, I find it is much more difficult to write concisely than verbosely.
Two data points:
* Lincoln's Gettysburg Address
* "
I have made this longer than usual because I have not had time to make it shorter." - Blaise Pascal
*
Others acknowledge that a long story (or whatever) is easier to write than a short one.