The fun of talk is to explore, but much of it and all that is irresponsible should not be written. Once written you have to stand by it. You may have said it to see whether you believed it or not.
-Hemingway (The Paris Review, 1958).
I wonder where "talk" and "write" would be divided for Hemingway in a world of email, texting, Twitter, Facebook, and blogging.