“Follow-up letters don't have to be long, but they do have to be personal. Make sure your letters could not have been sent to anyone else on your list.”

“I learned three things in Zurich during the war. I wrote them down. Firstly, you're either a revolutionary or you're not, and if you're not you might as well be an artist as anything else. Secondly, if you can't be an artist, you might as well be a revolutionary. I forget the third.”
by Tom Stoppard, "Travesties"