"First, Don't Write Poetry..."
"First, don't write poetry; second ditto; third ditto."
He didn't say to avoid writing altogether; he encouraged learning the craft of writing in every way, including "condensation". I'm guess that's a directive to edit, and when you think you've edited enough, edit some more. Good advice for word-hemorrhagers like me.
He did say to learn the printing business if you were going to write, presumably so you could self-publish if your content was inspired enough to challenge some views.
Wonder what he would have thought of blogging.
Article at CBC.ca